{"id":80822,"date":"2026-09-03T22:26:57","date_gmt":"2026-09-04T06:26:57","guid":{"rendered":"https:\/\/autoolstore.com\/?post_type=product&#038;p=80822"},"modified":"2026-09-22T22:27:44","modified_gmt":"2026-09-23T06:27:44","slug":"autool-as501-mini-digital-brake-fluid-tester","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/product\/autool-as501-mini-digital-brake-fluid-tester\/","title":{"rendered":"AUTOOL AS501 Brake Fluid Moisture Tester"},"content":{"rendered":"\r\n\r\n\r\n<div>\r\n<div class=\"autool-page-shell\"><main class=\"autool-description autool-product-page\" data-autool-lightbox=\"off\" data-autool-mobile-nav=\"false\" data-autool-rail-controls=\"true\" id=\"as501-product-page\"><section class=\"autool-section autool-product-hero autool-section--overview\" data-autool-nav=\"Overview\" data-autool-surface=\"dark\" id=\"autool-overview\"><div class=\"autool-layout-container autool-product-hero__grid\">\r\n<div class=\"autool-product-hero__copy\">\r\n<p class=\"autool-product-hero__eyebrow\">AUTOOL AS501 \u00b7 Six-Mode Brake Fluid Tester<\/p>\r\n<h2 class=\"autool-product-hero__title\">Reach Tight Reservoirs for Fluid Checks<\/h2>\r\n<p class=\"autool-product-hero__lead\">Screen brake-fluid water content after selecting the matching DOT or ENV mode. AS501 reaches confined reservoirs with a 260 mm flexible probe and returns water-content and fluid-grade guidance in about 10 seconds. The 1.8-inch backlit display keeps the selected fluid mode and completed result visible during service.<\/p>\r\n<ul aria-label=\"AS501 key benefits\" class=\"autool-product-hero__capabilities\">\r\n<li>DOT 3 \/ 4 \/ 5 \/ 5.1 \/ ENV Modes<\/li>\r\n<li>About 10-Second Water Screen<\/li>\r\n<li>260 mm Flexible Probe<\/li>\r\n<li>1.8-Inch Backlit Display<\/li>\r\n<li>2 \u00d7 AA Battery Power<\/li>\r\n<\/ul>\r\n<nav aria-label=\"AS501 sections\" class=\"autool-product-hero__actions\"><a class=\"autool-product-button autool-product-button--primary\" href=\"#autool-features\">Explore Features<\/a><a class=\"autool-product-button\" href=\"#autool-use\">View Workflow<\/a><a class=\"autool-product-button\" href=\"#autool-specifications\">View Specs<\/a><\/nav>\r\n<\/div>\r\n<figure class=\"autool-product-hero__media\"><img alt=\"AUTOOL AS501 brake fluid tester\" decoding=\"async\" loading=\"eager\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/09\/AUTOOL-AS501-Mini-Digital-Brake-Fluid-Tester-2.jpg\"\/><\/figure>\r\n<\/div><\/section><aside aria-label=\"AS501 at a glance\" class=\"autool-product-metrics\"><div class=\"autool-product-metrics__inner\">\r\n<div class=\"autool-product-metric\"><strong>6<\/strong><span>Fluid modes<\/span><\/div>\r\n<div class=\"autool-product-metric\"><strong>10 sec<\/strong><span>Test cycle<\/span><\/div>\r\n<div class=\"autool-product-metric\"><strong>1.8 in<\/strong><span>Display<\/span><\/div>\r\n<div class=\"autool-product-metric\"><strong>2 \u00d7 AA<\/strong><span>Power<\/span><\/div>\r\n<\/div><\/aside><section class=\"autool-section autool-product-section--soft autool-section--value\" data-autool-surface=\"base\" id=\"autool-features\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Key Features<\/p>\r\n<h2 class=\"autool-title\">Six-Mode Brake Fluid Moisture Tester with a Flexible Probe<\/h2><\/header><div class=\"autool-product-grid autool-product-grid--3 autool-product-rail\" data-autool-rail=\"features\">\r\n<article class=\"autool-product-card\"><h3>Six Fluid Modes<\/h3>\r\n<p>Select DOT 3, DOT 4, DOT 5, DOT 5.1, ENV 4 or ENV 6 before testing so the result uses the intended fluid setting.<\/p><\/article><article class=\"autool-product-card\"><h3>10-Second Test Cycle<\/h3>\r\n<p>The tester completes a brake fluid water test in about 10 seconds and displays water content and fluid grade.<\/p><\/article><article class=\"autool-product-card\"><h3>1.8-Inch Backlit Display<\/h3>\r\n<p>The backlit screen keeps the selected mode and result readable in bright or dim service areas.<\/p><\/article><article class=\"autool-product-card\"><h3>260 mm Flexible Probe<\/h3>\r\n<p>The flexible gooseneck helps reach reservoir openings while keeping the handheld display visible.<\/p><\/article><article class=\"autool-product-card\"><h3>Portable AA Power<\/h3>\r\n<p>Two 1.5 V AA batteries power the tester without a vehicle connection.<\/p><\/article>\r\n<article class=\"autool-product-card\"><h3>3 Years Warranty Support<\/h3><p>Main unit: 3-year warranty. Standard accessories: 1-year warranty. <a href=\"https:\/\/autoolstore.com\/warranty-policy\/\" rel=\"noopener\" target=\"_blank\">Warranty Policy<\/a>.<\/p><\/article><\/div>\r\n<\/div><\/section><section class=\"autool-section autool-section--workflow autool-section--workflow-anchor\" data-autool-surface=\"dark\" id=\"autool-use\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Service Workflow<\/p>\r\n<h2 class=\"autool-title\">Select, Immerse, Read and Clean<\/h2><\/header><div class=\"autool-workflow\" data-autool-workflow=\"\" data-workflow-mode=\"panels\">\r\n<div aria-label=\"as501 workflow\" class=\"autool-workflow__tabs\" data-workflow-tabs=\"\" role=\"tablist\">\r\n<button aria-controls=\"as501-panel-0\" aria-selected=\"true\" class=\"autool-workflow__tab\" data-workflow-step=\"0\" id=\"as501-tab-0\" role=\"tab\" tabindex=\"0\" type=\"button\">01<br\/><wbr\/>Confirm<wbr\/> the<wbr\/> Fluid<\/button><button aria-controls=\"as501-panel-1\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"1\" id=\"as501-tab-1\" role=\"tab\" tabindex=\"-1\" type=\"button\">02<br\/><wbr\/>Prepare<wbr\/> the<wbr\/> Probe<\/button><button aria-controls=\"as501-panel-2\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"2\" id=\"as501-tab-2\" role=\"tab\" tabindex=\"-1\" type=\"button\">03<br\/><wbr\/>Take<wbr\/> the<wbr\/> Reading<\/button><button aria-controls=\"as501-panel-3\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"3\" id=\"as501-tab-3\" role=\"tab\" tabindex=\"-1\" type=\"button\">04<br\/><wbr\/>Interpret<wbr\/> the<wbr\/> Result<\/button><button aria-controls=\"as501-panel-4\" aria-selected=\"false\" class=\"autool-workflow__tab\" data-workflow-step=\"4\" id=\"as501-tab-4\" role=\"tab\" tabindex=\"-1\" type=\"button\">05<br\/><wbr\/>Clean<wbr\/> and<wbr\/> Store<\/button>\r\n<\/div>\r\n<div class=\"autool-workflow__position\">\r\n<span class=\"autool-workflow__position-label\">Step progress<\/span><span class=\"autool-workflow__progress\"><span class=\"autool-workflow__progress-bar\" data-workflow-progress=\"\"><\/span><\/span><span class=\"autool-workflow__position-count\" data-workflow-count=\"\">1 \/ 5<\/span>\r\n<\/div>\r\n<div class=\"autool-workflow__content\">\r\n<div class=\"autool-workflow__main\">\r\n<div class=\"autool-workflow__panels\">\r\n<article aria-labelledby=\"as501-tab-0\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" id=\"as501-panel-0\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">01<\/div>\r\n<h3 class=\"autool-workflow__title\">Confirm the Fluid<\/h3>\r\n<p class=\"autool-workflow__description\">Identify the exact fluid family and select the matching mode or calibration.<\/p><\/article><article aria-labelledby=\"as501-tab-1\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"as501-panel-1\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">02<\/div>\r\n<h3 class=\"autool-workflow__title\">Prepare the Probe<\/h3>\r\n<p class=\"autool-workflow__description\">Power the tester as specified and clean the probe so residue from another fluid cannot affect the sample.<\/p><\/article><article aria-labelledby=\"as501-tab-2\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"as501-panel-2\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">03<\/div>\r\n<h3 class=\"autool-workflow__title\">Take the Reading<\/h3>\r\n<p class=\"autool-workflow__description\">Immerse or apply the probe as directed and keep it stable until the result is complete.<\/p><\/article><article aria-labelledby=\"as501-tab-3\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"as501-panel-3\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">04<\/div>\r\n<h3 class=\"autool-workflow__title\">Interpret the Result<\/h3>\r\n<p class=\"autool-workflow__description\">Compare the displayed water-content percentage and fluid grade with the applicable service information.<\/p><\/article><article aria-labelledby=\"as501-tab-4\" class=\"autool-workflow__panel\" data-workflow-panel=\"\" hidden=\"\" id=\"as501-panel-4\" role=\"tabpanel\" tabindex=\"0\"><div class=\"autool-workflow__number\">05<\/div>\r\n<h3 class=\"autool-workflow__title\">Clean and Store<\/h3>\r\n<p class=\"autool-workflow__description\">Remove the probe, clean it promptly with the approved method, and store the tester dry.<\/p><\/article>\r\n<\/div>\r\n<div class=\"autool-workflow__actions\">\r\n<button class=\"autool-workflow__button\" data-workflow-prev=\"\" disabled=\"\" type=\"button\">\u2190 Previous<\/button><button class=\"autool-workflow__button autool-workflow__button--next\" data-workflow-next=\"\" type=\"button\">Next step \u2192<\/button>\r\n<\/div>\r\n<\/div>\r\n<aside class=\"autool-workflow__safety\" data-workflow-safety=\"\"><h3 class=\"autool-workflow__safety-title\">Before You Start<\/h3>\r\n<ul class=\"autool-workflow__safety-list\"><li>Select the exact brake-fluid mode and clean the probe between samples. The displayed moisture\/grade value is a screening result and is not a standardized wet boiling-point test.<\/li><\/ul><\/aside>\r\n<\/div>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--soft\" data-autool-surface=\"base\" id=\"autool-safety\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Safe Use<\/p>\r\n<h2 class=\"autool-title\">Match the Fluid Before Every Test<\/h2><\/header><div class=\"autool-product-grid autool-product-grid--3 autool-product-rail\"><article class=\"autool-product-card\"><h3>Fluid Selection and Probe Care<\/h3>\r\n<p>Select the exact brake-fluid mode, clean the probe between samples and use the displayed moisture\/grade value for quick fluid screening. It is not a standardized wet boiling-point result.<\/p><\/article><\/div>\r\n<\/div><\/section><section class=\"autool-section\" data-autool-nav=\"Spec&amp;Comparison\" data-autool-surface=\"dark\" id=\"autool-specifications\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Specifications<\/p>\r\n<h2 class=\"autool-title\">Fluid Modes and Tester Specifications<\/h2><\/header><div class=\"autool-evidence-table-shell\" data-autool-table-slider=\"\"><div aria-label=\"Product specifications\" class=\"autool-evidence-table-scroll\" role=\"region\" tabindex=\"0\"><table class=\"autool-evidence-table\">\r\n<caption class=\"autool-table-caption--accessible\">Product Specifications<\/caption>\r\n<thead><tr>\r\n<th scope=\"col\">Specification<\/th>\r\n<th scope=\"col\">Value<\/th>\r\n<\/tr><\/thead>\r\n<tbody>\r\n<tr>\r\n<th scope=\"row\">Supported fluids<\/th>\r\n<td>DOT 3, DOT 4, DOT 5, DOT 5.1, ENV 4, ENV 6<\/td>\r\n<\/tr>\r\n<tr>\r\n<th scope=\"row\">Power supply<\/th>\r\n<td>2 \u00d7 1.5 V AA batteries<\/td>\r\n<\/tr>\r\n<tr>\r\n<th scope=\"row\">Operating temperature<\/th>\r\n<td>-10\u00b0C to 50\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<th scope=\"row\">Storage temperature<\/th>\r\n<td>-20\u00b0C to 60\u00b0C<\/td>\r\n<\/tr>\r\n<tr>\r\n<th scope=\"row\">Probe length<\/th>\r\n<td>260 mm<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table><\/div><\/div>\r\n<\/div><\/section><section class=\"autool-section autool-comparison\" data-autool-nav=\"Spec&amp;Comparison\" data-autool-surface=\"dark\" id=\"autool-comparison\"><div class=\"autool-layout-container\"><header class=\"autool-section-head\"><p class=\"autool-subhead\">Compare Models<\/p>\r\n<h2 class=\"autool-title\">Compare Fluid Testing Methods<\/h2><\/header><div class=\"autool-model-compare\" data-autool-model-compare=\"\" data-current-model=\"as501-brake-fluid-tester\">\r\n<button aria-controls=\"compare47-08_as501-compare-model-picker\" aria-expanded=\"false\" aria-label=\"Open model comparison selector\" class=\"autool-model-compare__mobile-trigger\" data-compare-picker-open=\"\" type=\"button\"><span class=\"autool-model-compare__mobile-trigger-copy\"><strong>Compare models<\/strong><span data-compare-mobile-summary=\"\">Selected: AS501 Brake Fluid Tester<\/span><\/span><span class=\"autool-model-compare__mobile-trigger-count\" data-compare-mobile-count=\"\">1<\/span><\/button>\r\n<button aria-label=\"Close model selector\" class=\"autool-model-compare__scrim\" data-compare-picker-close=\"\" tabindex=\"-1\" type=\"button\"><\/button>\r\n<div aria-labelledby=\"compare47-08_as501-compare-picker-title\" class=\"autool-model-compare__selector\" id=\"compare47-08_as501-compare-model-picker\" role=\"group\">\r\n<div class=\"autool-model-compare__selector-head\">\r\n<div class=\"autool-model-compare__selector-copy\">\r\n<h3 class=\"autool-model-compare__legend\" id=\"compare47-08_as501-compare-picker-title\">Model Guide<\/h3>\r\n<p class=\"autool-model-compare__instruction\">Choose one or more models. AS501 Brake Fluid Tester is selected by default.<\/p>\r\n<\/div>\r\n<div class=\"autool-model-compare__selector-tools\">\r\n<div class=\"autool-model-compare__count\" data-compare-count=\"\">1 model selected<\/div>\r\n<button aria-label=\"Close model selector\" class=\"autool-model-compare__picker-close\" data-compare-picker-close=\"\" type=\"button\">\u00d7<\/button>\r\n<\/div>\r\n<\/div>\r\n<div aria-label=\"Models available for comparison\" class=\"autool-model-compare__grid\" role=\"list\"><label class=\"autool-model-option autool-is-selected\" data-model-card=\"as501-brake-fluid-tester\" role=\"listitem\"><input checked=\"\" data-model-checkbox=\"\" type=\"checkbox\" value=\"as501-brake-fluid-tester\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">AS501 Brake Fluid Tester<\/strong><\/span><span class=\"autool-model-option__current\">Current model<\/span><\/label><label class=\"autool-model-option\" data-model-card=\"as502-brake-fluid-tester\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"as502-brake-fluid-tester\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">AS502 Brake Fluid Tester<\/strong><\/span><\/label><label class=\"autool-model-option\" data-model-card=\"as503-engine-oil-quality-tester\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"as503-engine-oil-quality-tester\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">AS503 Engine Oil Quality Tester<\/strong><\/span><\/label><label class=\"autool-model-option\" data-model-card=\"as505-transmission-fluid-tester\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"as505-transmission-fluid-tester\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">AS505 Transmission Fluid Tester<\/strong><\/span><\/label><label class=\"autool-model-option\" data-model-card=\"as506-brake-fluid-boiling-point-tester\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"as506-brake-fluid-boiling-point-tester\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">AS506 Brake Fluid Boiling Point Tester<\/strong><\/span><\/label><label class=\"autool-model-option\" data-model-card=\"as507-power-steering-fluid-tester\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"as507-power-steering-fluid-tester\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">AS507 Power Steering Fluid Tester<\/strong><\/span><\/label><label class=\"autool-model-option\" data-model-card=\"as509-coolant-boiling-point-tester\" role=\"listitem\"><input data-model-checkbox=\"\" type=\"checkbox\" value=\"as509-coolant-boiling-point-tester\"\/><span class=\"autool-model-option__copy\"><strong class=\"autool-model-option__model\">AS509 Coolant Boiling Point Tester<\/strong><\/span><\/label><\/div>\r\n<div class=\"autool-model-compare__selection-bar\">\r\n<p aria-live=\"polite\" class=\"autool-model-compare__status\" data-compare-status=\"\" id=\"compare47-08_as501-compare-result-status\" role=\"status\">AS501 Brake Fluid Tester is selected. Choose another model to compare.<\/p>\r\n<div class=\"autool-model-compare__selection-actions\">\r\n<button class=\"autool-model-compare__clear\" data-compare-clear=\"\" disabled=\"\" type=\"button\">Reset selection<\/button><button class=\"autool-model-compare__done\" data-compare-picker-close=\"\" type=\"button\">Done<\/button>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<div class=\"autool-model-compare__result\" data-compare-result=\"\">\r\n<div class=\"autool-model-compare__result-toolbar\">\r\n<h3 class=\"autool-model-compare__result-title\" data-compare-title=\"\" id=\"compare47-08_as501-compare-result-title\">AS501 Brake Fluid Tester comparison<\/h3>\r\n<label aria-disabled=\"true\" class=\"autool-model-compare__difference-toggle\" data-differences-label=\"\"><input data-differences-only=\"\" disabled=\"\" type=\"checkbox\"\/> Show differences only<\/label>\r\n<\/div>\r\n<div data-compare-table=\"\">\r\n<div class=\"autool-compare-matrix__empty\" hidden=\"\">No model is selected. Choose a model to compare.<\/div>\r\n<div aria-describedby=\"compare47-08_as501-compare-result-status\" aria-labelledby=\"compare47-08_as501-compare-result-title\" class=\"autool-compare-matrix-wrap\" role=\"region\" tabindex=\"0\">\r\n<table aria-label=\"Product comparison\" class=\"autool-compare-matrix\" data-autool-columns=\"1\"><colgroup><col class=\"autool-compare-matrix__criteria-col\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"as501-brake-fluid-tester\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"\/><col class=\"autool-compare-matrix__model-col\" data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"\/><\/colgroup><thead><tr><th scope=\"col\">Product name<\/th><th data-compare-model=\"as501-brake-fluid-tester\" scope=\"col\">AS501 Brake Fluid Tester<\/th><th data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\" scope=\"col\">AS502 Brake Fluid Tester<\/th><th data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\" scope=\"col\">AS503 Engine Oil Quality Tester<\/th><th data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\" scope=\"col\">AS505 Transmission Fluid Tester<\/th><th data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\" scope=\"col\">AS506 Brake Fluid Boiling Point Tester<\/th><th data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\" scope=\"col\">AS507 Power Steering Fluid Tester<\/th><th data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\" scope=\"col\">AS509 Coolant Boiling Point Tester<\/th><\/tr><\/thead><tbody><tr class=\"autool-compare-matrix__category\" data-compare-category=\"group47-1\">\r\n<th class=\"autool-compare-matrix__category-label\" scope=\"rowgroup\"><span class=\"autool-compare-matrix__category-label-inner\">Test Method &amp; Application<\/span><\/th>\r\n<td class=\"autool-compare-matrix__category-track\" colspan=\"1\" data-compare-category-track=\"\"><span aria-hidden=\"true\" class=\"autool-compare-matrix__category-progress\" data-autool-progress-order-ready=\"yes\" data-compare-category-progress=\"\"><span class=\"autool-compare-matrix__category-progress-label\">Slide \/ drag<\/span><span class=\"autool-compare-matrix__category-progress-meter\"><span class=\"autool-compare-matrix__category-progress-bar\"><\/span><\/span><span class=\"autool-compare-matrix__category-progress-count\" data-compare-category-count=\"\">1 \/ 1<\/span><\/span><\/td>\r\n<\/tr><tr data-compare-group=\"group47-1\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Detection Technology<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Water-content screening; no hydraulic pressure generation or measurement<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Optical Probe Technology<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Optical Probe Technology<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Sample Heating Technology<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Optical Probe Technology<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Sample Heating Technology<\/div><\/td><\/tr><tr data-compare-group=\"group47-1\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Operating Principle<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">Brake Fluid (Water Content)<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Brake Fluid (Water Content)<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Engine Oil (Transmittance)<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Transmission Fluid(Transmittance)<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Brake Fluid (Boiling Point)<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Steering Fluid (Transmittance)<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Coolant<\/div><\/td><\/tr><tr data-compare-group=\"group47-1\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Test Mode Selection<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">Normal Mode<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Normal Mode\/Expert Mode<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Gasoline Engine\/Diesel Engine<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Automotive Transmission Fluid<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Normal Mode\/Brand Mode<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Automotive Steering Gear<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Normal Mode\/Brand Mode<\/div><\/td><\/tr><tr data-compare-group=\"group47-1\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Boiling Point Reference Value<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u2713<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u2713<\/div><\/td><\/tr><tr data-compare-group=\"group47-1\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Normal Mode<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">6 Types ENV-4\u3001ENV-6 DOT3\u3001DOT4\u3001DOT5\u3001DOT5.1<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">3 Types DOT3\u3001DOT4\u3001DOT5.1<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">DOT3, DOT4 and DOT5.1 (procedure-confirmed selections)<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">23 Coolant Brands For ACDELCO\u3001BASF\u3001BOSCH\u3001CASTROL\u3001ENGINE_ICE\u3001EVANS\u3001FORD\u3001HONDA\u3001JOHN_DEERE\u3001KUNLUN\u3001MOBIL\u3001MOPAR\u3001NISSAN\u3001OMTECH\u3001PEAK\u3001PRESTONE\u3001RECOCHEM\u3001SHELL\u3001SKI-DOO\u3001ZEREX\u3001STAR_BRITE\u3001TOTAL\u3001TOYOTA<\/div><\/td><\/tr><tr class=\"autool-compare-matrix__category\" data-compare-category=\"group47-2\">\r\n<th class=\"autool-compare-matrix__category-label\" scope=\"rowgroup\"><span class=\"autool-compare-matrix__category-label-inner\">Measurement &amp; Response<\/span><\/th>\r\n<td class=\"autool-compare-matrix__category-track\" colspan=\"1\" data-compare-category-track=\"\"><span aria-hidden=\"true\" class=\"autool-compare-matrix__category-progress\" data-autool-progress-order-ready=\"yes\" data-compare-category-progress=\"\"><span class=\"autool-compare-matrix__category-progress-label\">Slide \/ drag<\/span><span class=\"autool-compare-matrix__category-progress-meter\"><span class=\"autool-compare-matrix__category-progress-bar\"><\/span><\/span><span class=\"autool-compare-matrix__category-progress-count\" data-compare-category-count=\"\">1 \/ 1<\/span><\/span><\/td>\r\n<\/tr><tr data-compare-group=\"group47-2\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Temperature Unit Switching<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u2103\/\u2109<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u2103\/\u2109<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u2103\/\u2109<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u2103\/\u2109<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u2103\/\u2109<\/div><\/td><\/tr><tr data-compare-group=\"group47-2\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Temperature Measurement Range<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">0-85\u2103 0-185\u2109<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">0-85\u2103 0-185\u2109<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">0-320\u2103 0-608\u2109<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">0-85\u2103 0-185\u2109<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Diluted Coolant Boiling Point Range\uff1a 100\u00b0C~120\u00b0C(212\u00b0F~248\u00b0F) Original Manufacturer Coolant Boiling Point Reference Range 106\u00b0C~191\u00b0C(221\u00b0F~376\u00b0F)<\/div><\/td><\/tr><tr data-compare-group=\"group47-2\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Test Duration<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">10s Response<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">10s Response<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">10s Response<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">10s Response<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">16s Response<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">10s Response<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">20~40s Response<\/div><\/td><\/tr><tr class=\"autool-compare-matrix__category\" data-compare-category=\"group47-3\">\r\n<th class=\"autool-compare-matrix__category-label\" scope=\"rowgroup\"><span class=\"autool-compare-matrix__category-label-inner\">Display, Probe &amp; Power<\/span><\/th>\r\n<td class=\"autool-compare-matrix__category-track\" colspan=\"1\" data-compare-category-track=\"\"><span aria-hidden=\"true\" class=\"autool-compare-matrix__category-progress\" data-autool-progress-order-ready=\"yes\" data-compare-category-progress=\"\"><span class=\"autool-compare-matrix__category-progress-label\">Slide \/ drag<\/span><span class=\"autool-compare-matrix__category-progress-meter\"><span class=\"autool-compare-matrix__category-progress-bar\"><\/span><\/span><span class=\"autool-compare-matrix__category-progress-count\" data-compare-category-count=\"\">1 \/ 1<\/span><\/span><\/td>\r\n<\/tr><tr data-compare-group=\"group47-3\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Backlit Display Screen<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">1.8-inch<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">2.8-inch<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">2.8-inch<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">2.8-inch<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">1.54-inch<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">2.8-inch<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">1.6-inch<\/div><\/td><\/tr><tr data-compare-group=\"group47-3\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Test Cable Length<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">26cm<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">26cm<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">80cm<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">80cm<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">4cm<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">80cm<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">130cm<\/div><\/td><\/tr><tr data-compare-group=\"group47-3\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Power Supply Voltage<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">3V<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">6V<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">6V<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">6V<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">12V<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">6V<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">10-14V<\/div><\/td><\/tr><tr data-compare-group=\"group47-3\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Hose Material<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">Iron Oxide<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">304 Stainless Steel<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Teflon<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Teflon<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Teflon<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">\u00d7<\/div><\/td><\/tr><tr class=\"autool-compare-matrix__category\" data-compare-category=\"group47-4\">\r\n<th class=\"autool-compare-matrix__category-label\" scope=\"rowgroup\"><span class=\"autool-compare-matrix__category-label-inner\">Product Details<\/span><\/th>\r\n<td class=\"autool-compare-matrix__category-track\" colspan=\"1\" data-compare-category-track=\"\"><span aria-hidden=\"true\" class=\"autool-compare-matrix__category-progress\" data-autool-progress-order-ready=\"yes\" data-compare-category-progress=\"\"><span class=\"autool-compare-matrix__category-progress-label\">Slide \/ drag<\/span><span class=\"autool-compare-matrix__category-progress-meter\"><span class=\"autool-compare-matrix__category-progress-bar\"><\/span><\/span><span class=\"autool-compare-matrix__category-progress-count\" data-compare-category-count=\"\">1 \/ 1<\/span><\/span><\/td>\r\n<\/tr><tr data-compare-group=\"group47-4\" data-compare-row=\"\"><th class=\"autool-compare-matrix__feature\" scope=\"row\">Detected Condition \/ Result<\/th><td data-compare-model=\"as501-brake-fluid-tester\"><div class=\"autool-compare-matrix__value\">Water content and fluid grade<\/div><\/td><td data-compare-model=\"as502-brake-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><td data-compare-model=\"as503-engine-oil-quality-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><td data-compare-model=\"as505-transmission-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><td data-compare-model=\"as506-brake-fluid-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><td data-compare-model=\"as507-power-steering-fluid-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><td data-compare-model=\"as509-coolant-boiling-point-tester\" hidden=\"\"><div class=\"autool-compare-matrix__value\">Not stated<\/div><\/td><\/tr><\/tbody><\/table>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div><\/div><\/section><section class=\"autool-section autool-product-section--cool autool-section--downloads\" data-autool-surface=\"cool\" id=\"autool-download\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Manual &amp; Support<\/p>\r\n<h2 class=\"autool-title\">Find the Manual and Fluid-Test Guidance<\/h2><\/header><div aria-label=\"AS501 manual download and setup support\" class=\"autool-product-rail autool-resources-grid autool-mobile-rail\" data-autool-rail=\"resources\">\r\n<article class=\"autool-resource-panel autool-resource-download\"><div class=\"autool-resource-media\" data-layout44-generated=\"downloads-cover\"><img loading=\"lazy\" alt=\"AS501 manual and setup guides cover\" data-layout44-generated=\"downloads-cover\" decoding=\"async\" height=\"960\" loading=\"lazy\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/autool-manual-covers\/08_as501-manual-guides-cover.svg\" width=\"720\"\/><\/div><div class=\"autool-resource-body\"><span class=\"autool-resource-meta\">Manual \/ PDF<\/span><h3>AUTOOL AS501 User Manual<\/h3><p>Open the PDF manual for AUTOOL AS501 fluid mode selection, flexible-probe testing, result interpretation, battery setup, probe cleaning, safe handling and troubleshooting support.<\/p><div class=\"autool-resource-actions\"><a class=\"autool-product-button\" href=\"https:\/\/www.autooltech.com\/wp-content\/uploads\/2025\/07\/AUTOOL-AS501-EN-DE-MANUAL.pdf\" rel=\"noopener\" target=\"_blank\">Download Manual<\/a><\/div><\/div><\/article><aside class=\"autool-resource-panel autool-section--support\" id=\"autool-support\"><div class=\"autool-resource-body\"><span class=\"autool-resource-meta\">Setup Help<\/span><h3>Need Help Choosing the Right Setup?<\/h3><p>Contact AUTOOL Store before ordering for help with manual versions, installation steps, compatibility, accessories, safe-use instructions, or after-sales support.<\/p><dl class=\"autool-support-list\"><div><dt>Email<\/dt><dd><a href=\"mailto:support@autoolstore.com\">support@autoolstore.com<\/a><\/dd><\/div><div><dt>WhatsApp<\/dt><dd><a href=\"https:\/\/wa.me\/8618926477404\" target=\"_blank\" rel=\"noopener\">+86 189 2647 7404<\/a><\/dd><\/div><\/dl><div class=\"autool-resource-actions\"><a class=\"autool-product-button\" href=\"mailto:support@autoolstore.com\">EMAIL<\/a><a class=\"autool-product-button\" href=\"https:\/\/wa.me\/8618926477404\" rel=\"noopener\" target=\"_blank\">WHATSAPP<\/a><\/div><\/div><\/aside>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--warm autool-section--package\" data-autool-surface=\"warm\" id=\"autool-box\"><div class=\"autool-layout-container\">\r\n<div class=\"autool-package-layout\">\r\n<figure class=\"autool-package-media\"><img alt=\"AUTOOL AS501 package contents\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.autooltech.com\/wp-content\/uploads\/2025\/07\/496b3296-9200-49c1-9902-eb3b328b723b.png\"\/><\/figure><div class=\"autool-package-copy\"><p class=\"autool-subhead\">Package Contents<\/p>\r\n<h2 class=\"autool-title\">See What Comes in the Box<\/h2><ul aria-label=\"AS501 package contents\" class=\"autool-package-list autool-product-rail\"><li>\r\n<span>Package Contents<\/span><strong>AUTOOL AS501 tester, retail packaging and the accessories shown for the current sales package; confirm the selected regional package before ordering.<\/strong>\r\n<\/li><\/ul><\/div>\r\n<\/div>\r\n<\/div><\/section><section class=\"autool-section autool-product-section--white autool-section--faq\" data-autool-nav=\"FAQ\" data-autool-surface=\"white\" id=\"autool-faq-description\"><div class=\"autool-layout-container\">\r\n<header class=\"autool-section-head\"><p class=\"autool-subhead\">Buyer Questions<\/p>\r\n<h2 class=\"autool-title\">Fluid Fit, Method and Result Questions<\/h2><\/header><div class=\"autool-faq-grid\">\r\n<details><summary>Which brake fluids can AS501 test?<\/summary><div class=\"autool-faq-answer\"><p>Select the matching mode for DOT 3, DOT 4, DOT 5, DOT 5.1, ENV 4 or ENV 6 before placing the clean probe in the fluid.<\/p><\/div><\/details><details><summary>How long does a test take?<\/summary><div class=\"autool-faq-answer\"><p>The manufacturer&#8217;s procedure states that the result appears after about 10 seconds.<\/p><\/div><\/details><details><summary>Does the reading replace a boiling-point test?<\/summary><div class=\"autool-faq-answer\"><p>No. AS501 screens moisture\/grade through its supported method; follow the vehicle or fluid maker&#8217;s service procedure when a boiling-point test or another confirmation is required.<\/p><\/div><\/details><details><summary>How should the probe be handled between tests?<\/summary><div class=\"autool-faq-answer\"><p>Clean the probe after each sample and avoid transferring residue between different fluid types.<\/p><\/div><\/details>\r\n<\/div>\r\n<\/div><\/section><\/main><\/div>\r\n\r\n<\/div>\r\n<!-- \/wp:post-content -->\r\n","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>Six Brake-Fluid Modes:<\/strong> Select DOT 3, DOT 4, DOT 5, DOT 5.1, ENV 4, or ENV 6 before testing.<\/li>\n<li><strong>About 10 Seconds:<\/strong> Complete a test cycle in about 10 seconds and view water-content and fluid-grade results.<\/li>\n<li><strong>260 mm Flexible Probe:<\/strong> Reach confined reservoir openings while keeping the handheld display visible.<\/li>\n<li><strong>1.8-Inch Backlit Display:<\/strong> Read the selected fluid mode and completed result in bright or dim service areas.<\/li>\n<li><strong>Portable AA Power:<\/strong> Run the tester from two 1.5 V AA batteries without connecting to the vehicle.<\/li>\n<\/ul>\n","protected":false},"featured_media":80825,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[448],"product_cat":[1068],"product_tag":[],"hf_cat_product":[],"class_list":["post-80822","product","type-product","status-publish","has-post-thumbnail","product_brand-autool","product_cat-oil-analysis-tester","first","instock","shipping-taxable","purchasable","product-type-simple"],"meta_box":{"autool_archive_segment":"","autool_primary_use_case":"","autool_customer_focus":[],"autool_source_summary":"","autool_model_family":"","autool_voltage_options":"","autool_ship_from_options":"","autool_package_options":"","autool_accessory_options":"","autool_data_confidence":"","autool_manual_review_notes":""},"_links":{"self":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product\/80822","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/comments?post=80822"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/media\/80825"}],"wp:attachment":[{"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/media?parent=80822"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_brand?post=80822"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_cat?post=80822"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/product_tag?post=80822"},{"taxonomy":"hf_cat_product","embeddable":true,"href":"https:\/\/autoolstore.com\/wp-json\/wp\/v2\/hf_cat_product?post=80822"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}