{"id":57618,"date":"2025-06-26T05:37:22","date_gmt":"2025-06-26T05:37:22","guid":{"rendered":"https:\/\/shop.autooltech.com\/?p=57618"},"modified":"2026-05-20T05:58:09","modified_gmt":"2026-05-20T13:58:09","slug":"what-are-brake-fluid-testers-and-are-they-worth-it","status":"publish","type":"post","link":"https:\/\/autoolstore.com\/lt\/what-are-brake-fluid-testers-and-are-they-worth-it\/","title":{"rendered":"What Are Brake Fluid Testers and Are They Worth It?"},"content":{"rendered":"<p><main class=\"autool-tire-guide\" id=\"what-are-brake-fluid-testers-and-are-they-worth-it\"><\/p>\n<section class=\"ag-block ag-intro\" id=\"overview\">\n<div class=\"ag-section-header\">\n  <span class=\"ag-section-kicker is-accent\">Brake Fluid Testing Guide<\/span><br \/>\n  <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n<\/div>\n<h2 class=\"ag-heading\">What Are Brake Fluid Testers and Are They Worth It?<\/h2>\n<div class=\"ag-lede\">\n<p>To keep the braking system in optimal condition, brake fluid should typically be replaced every two to three years. In some cases, brake fluid may degrade faster because of hard braking, leaks, or system maintenance, so it is important to check the fluid occasionally.<\/p>\n<p>A brake fluid tester helps users understand whether brake fluid is aging and whether replacement is needed. This guide explains what a brake fluid tester is, the main tester types, how conductivity testers work, when brake fluid should be replaced, and whether these tools are worth using in a workshop.<\/p>\n<\/div>\n<nav class=\"ag-guide-strip\" aria-label=\"Brake fluid tester guide sections\">\n<a class=\"ag-guide-card\" href=\"#definition\"><br \/>\n<span class=\"ag-guide-card__num\">01<\/span><\/p>\n<h3 class=\"ag-guide-card__title\">Tester Basics<\/h3>\n<p class=\"ag-guide-card__text\">A brake fluid tester, also known as a brake fluid analyzer, is a tool designed to check the condition of car brake fluid. It primarily&#8230;<\/p>\n<p><\/a><br \/>\n<a class=\"ag-guide-card\" href=\"#types\"><br \/>\n<span class=\"ag-guide-card__num\">02<\/span><\/p>\n<h3 class=\"ag-guide-card__title\">Tester Types<\/h3>\n<p class=\"ag-guide-card__text\">There are several types of brake fluid testers on the market. Each type uses a different testing method and has different strengths.<\/p>\n<p><\/a><br \/>\n<a class=\"ag-guide-card\" href=\"#working\"><br \/>\n<span class=\"ag-guide-card__num\">03<\/span><\/p>\n<h3 class=\"ag-guide-card__title\">How It Works<\/h3>\n<p class=\"ag-guide-card__text\">A conductivity brake fluid tester determines water content by measuring electrical conductivity. Since water has much higher conductivity&#8230;<\/p>\n<p><\/a><br \/>\n<a class=\"ag-guide-card\" href=\"#replacement\"><br \/>\n<span class=\"ag-guide-card__num\">04<\/span><\/p>\n<h3 class=\"ag-guide-card__title\">Replacement<\/h3>\n<p class=\"ag-guide-card__text\">The AUTOOL AS502 displays moisture level through icons and values. When the screen shows &quot;A,&quot; it means the moisture content has reached a&#8230;<\/p>\n<p><\/a><br \/>\n<a class=\"ag-guide-card\" href=\"#value\"><br \/>\n<span class=\"ag-guide-card__num\">05<\/span><\/p>\n<h3 class=\"ag-guide-card__title\">Worth It?<\/h3>\n<p class=\"ag-guide-card__text\">Compared with cheap conductivity test pens and brake fluid test strips, AUTOOL AS502 is positioned as a reasonably priced, professional, and&#8230;<\/p>\n<p><\/a><br \/>\n<a class=\"ag-guide-card\" href=\"#summary\"><br \/>\n<span class=\"ag-guide-card__num\">06<\/span><\/p>\n<h3 class=\"ag-guide-card__title\">Conclusion<\/h3>\n<p class=\"ag-guide-card__text\">Brake fluid testers are useful for vehicle safety and braking-system performance. Conductivity brake fluid testers such as AUTOOL AS502 are&#8230;<\/p>\n<p><\/a><br \/>\n<\/nav>\n<\/section>\n<div class=\"ag-content-layout\">\n<div class=\"ag-content-main\">\n<section class=\"ag-block ag-product-focus\" id=\"definition\">\n<div class=\"ag-section-header\">\n  <span class=\"ag-section-kicker\">Tool Definition<\/span><br \/>\n  <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n<\/div>\n<h2 class=\"ag-heading\">What Is a Brake Fluid Tester?<\/h2>\n<p>A brake fluid tester, also known as a brake fluid analyzer, is a tool designed to check the condition of car brake fluid. It primarily measures moisture content in the fluid to determine whether brake fluid is aging and needs replacement.<\/p>\n<p>Because moisture affects brake fluid performance, a tester gives technicians and vehicle owners a clearer basis for maintenance decisions than visual inspection alone.<\/p>\n<figure class=\"ag-media-card\"><img src=\"\/wp-content\/uploads\/2024\/10\/brake-fluid-service.jpg\" alt=\"Brake fluid tester service reference\" loading=\"lazy\" decoding=\"async\" \/><\/figure>\n<\/section>\n<section class=\"ag-block ag-process-section\" id=\"types\">\n<div class=\"ag-section-header\">\n  <span class=\"ag-section-kicker\">Tester Types<\/span><br \/>\n  <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n<\/div>\n<h2 class=\"ag-heading\">What Are the Different Types of Brake Fluid Testers?<\/h2>\n<p>There are several types of brake fluid testers on the market. Each type uses a different testing method and has different strengths.<\/p>\n<div class=\"ag-card-grid ag-card-grid-2-fixed\">\n<article class=\"ag-feature-card\">\n<h3>Conductivity Test Pen<\/h3>\n<p>Measures the conductivity of brake fluid to detect water content. It is easy to use and gives instant results, but accuracy is limited because conductivity varies by brand and DOT rating.<\/p>\n<\/article>\n<article class=\"ag-feature-card\">\n<h3>Conductivity Brake Fluid Tester<\/h3>\n<p>Uses a highly sensitive probe to measure water content in the brake fluid. The result is displayed as a precise percentage on a high-definition backlit screen.<\/p>\n<\/article>\n<article class=\"ag-feature-card\">\n<h3>Boiling Point Tester<\/h3>\n<p>Heats the brake fluid sample to check its boiling point. A lower boiling point indicates higher water content. This type can be more accurate but requires calibration according to manufacturer standards.<\/p>\n<\/article>\n<article class=\"ag-feature-card\">\n<h3>Brake Fluid Test Strips<\/h3>\n<p>Detect copper content in brake fluid. Dip the strip into the fluid, wait a few seconds, then match the color change to a chart to read the result.<\/p>\n<\/article>\n<\/div>\n<\/section>\n<section class=\"ag-block ag-process-section\" id=\"working\">\n<div class=\"ag-section-header\">\n  <span class=\"ag-section-kicker\">Conductivity Principle<\/span><br \/>\n  <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n<\/div>\n<h2 class=\"ag-heading\">How Does a Conductivity Brake Fluid Tester Work?<\/h2>\n<p>A conductivity brake fluid tester determines water content by measuring electrical conductivity. Since water has much higher conductivity than brake fluid, more water in the sample means higher overall conductivity.<\/p>\n<div class=\"ag-summary-grid\">\n<article class=\"ag-summary-card\">\n<h3>Working Principle<\/h3>\n<p>The tester uses a probe to contact the brake fluid sample. Its internal sensor measures conductivity and makes a judgment based on preset algorithms and brake fluid types such as DOT3, DOT4, and DOT5.1.<\/p>\n<\/article>\n<article class=\"ag-summary-card\">\n<h3>Temperature Compensation<\/h3>\n<p>Some advanced models feature temperature compensation to automatically correct the impact of ambient temperature on test results.<\/p>\n<\/article>\n<article class=\"ag-summary-card\">\n<h3>Test Results<\/h3>\n<p>The tester displays moisture as a percentage. Some products also include warning lights or sound alerts so technicians can quickly decide whether replacement is needed.<\/p>\n<\/article>\n<article class=\"ag-summary-card\">\n<h3>AUTOOL AS502 Example<\/h3>\n<p>AUTOOL AS502 is an intelligent conductivity brake fluid tester with a high-sensitivity probe, temperature compensation system, and high-definition backlit screen.<\/p>\n<\/article>\n<\/div>\n<\/section>\n<section class=\"ag-block ag-spec-block\" id=\"replacement\">\n<div class=\"ag-section-header\">\n  <span class=\"ag-section-kicker\">Result Reading<\/span><br \/>\n  <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n<\/div>\n<h2 class=\"ag-heading\">When Should Brake Fluid Be Replaced?<\/h2>\n<p>The AUTOOL AS502 displays moisture level through icons and values. When the screen shows &#8220;A,&#8221; it means the moisture content has reached a warning level and attention is needed. &#8220;X&#8221; indicates poor brake fluid condition and replacement is recommended. &#8220;OK&#8221; means the moisture level is within the safe range. A specific percentage, such as 8.8%, shows the actual moisture content.<\/p>\n<p>In the original guide, moisture content from 0%-2% shows OK, 2%-3% shows a warning symbol, and over 3% shows a replacement warning.<\/p>\n<div class=\"ag-spec-table-wrap\">\n<div class=\"ag-table-wrap\">\n<table class=\"ag-spec-table ag-table\">\n<tbody>\n<tr>\n<th>Display Symbol<\/th>\n<th>Meaning<\/th>\n<th>Explanation<\/th>\n<\/tr>\n<tr>\n<th>OK<\/th>\n<td>Brake fluid moisture acceptable<\/td>\n<td>Fluid is in good condition.<\/td>\n<\/tr>\n<tr>\n<th>A \/ Warning<\/th>\n<td>Brake fluid moisture warning<\/td>\n<td>Moisture content exceeds the safe level and attention is needed.<\/td>\n<\/tr>\n<tr>\n<th>X \/ Replacement<\/th>\n<td>Replacement recommended<\/td>\n<td>Brake fluid is aging and should be replaced soon.<\/td>\n<\/tr>\n<tr>\n<th>% Number<\/th>\n<td>Brake fluid moisture percentage<\/td>\n<td>Shows actual water content, such as 8.8%.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"ag-block ag-spec-block\" id=\"value\">\n<div class=\"ag-section-header\">\n  <span class=\"ag-section-kicker\">Value Comparison<\/span><br \/>\n  <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n<\/div>\n<h2 class=\"ag-heading\">Is the Conductivity Brake Fluid Tester Worth It?<\/h2>\n<p>Compared with cheap conductivity test pens and brake fluid test strips, AUTOOL AS502 is positioned as a reasonably priced, professional, and easy-to-use option for daily workshop use.<\/p>\n<div class=\"ag-spec-table-wrap\">\n<div class=\"ag-table-wrap\">\n<table class=\"ag-spec-table ag-table\">\n<tbody>\n<tr>\n<th>Product Type<\/th>\n<th>Price Range (USD)<\/th>\n<th>Testing Accuracy<\/th>\n<th>Main Function<\/th>\n<\/tr>\n<tr>\n<th>Conductivity Tester Pen<\/th>\n<td>$7-$22<\/td>\n<td>Moderate<\/td>\n<td>Conductivity test<\/td>\n<\/tr>\n<tr>\n<th>Brake Fluid Test Strips<\/th>\n<td>$3-$12<\/td>\n<td>Low<\/td>\n<td>Water content test<\/td>\n<\/tr>\n<tr>\n<th>Brake Fluid Tester<\/th>\n<td>$29-$39<\/td>\n<td>High<\/td>\n<td>Conductivity and boiling point test<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"ag-block ag-summary\" id=\"summary\">\n<div class=\"ag-section-header\">\n  <span class=\"ag-section-kicker\">Conclusion<\/span><br \/>\n  <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n<\/div>\n<h2 class=\"ag-heading\">Brake Fluid Testers Are Useful for Safety and Service Quality<\/h2>\n<p>Brake fluid testers are useful for vehicle safety and braking-system performance. Conductivity brake fluid testers such as AUTOOL AS502 are accurate, easy to use, and suitable for daily workshop checks.<\/p>\n<p>Using brake fluid testers can improve workshop efficiency and service quality by helping technicians make clearer replacement decisions and provide safer repairs for customers.<\/p>\n<\/section>\n<\/div>\n<aside class=\"ag-sidebar\" aria-label=\"Brake fluid tester guide quick navigation\">\n<section class=\"ag-sidebar-widget is-white\">\n<h2 class=\"ag-sidebar-title\">Quick Guide<\/h2>\n<ul>\n<li><a href=\"#definition\">Tester Basics<\/a><\/li>\n<li><a href=\"#types\">Tester Types<\/a><\/li>\n<li><a href=\"#working\">How It Works<\/a><\/li>\n<li><a href=\"#replacement\">Replacement<\/a><\/li>\n<li><a href=\"#value\">Worth It?<\/a><\/li>\n<li><a href=\"#summary\">Conclusion<\/a><\/li>\n<\/ul>\n<\/section>\n<section class=\"ag-sidebar-widget is-white\">\n<h2 class=\"ag-sidebar-title\">Moisture Guide<\/h2>\n<ul>\n<li>0%-2%: OK<\/li>\n<li>2%-3%: warning<\/li>\n<li>Over 3%: replacement warning<\/li>\n<li>Percentage display shows actual water content<\/li>\n<\/ul>\n<\/section>\n<\/aside>\n<\/div>\n<section aria-labelledby=\"related-products-title-57618\" class=\"ag-block ag-related-products autool-post-related-products\">\n<div class=\"ag-section-heading\">\n<p class=\"ag-eyebrow\">Related Products<\/p>\n<h2 id=\"related-products-title-57618\">Recommended AUTOOL Products<\/h2>\n<p>Rendered through WooCommerce product shortcode so the cards inherit the global product-card structure and Blocksy\/WooCommerce styles.<\/p>\n<\/div>\n<div class=\"autool-products-slider ag-products-shortcode autool-desc-products\" aria-label=\"AUTOOL related product cards\">\n<div class=\"woocommerce columns-5\"><ul class=\"products columns-5\" data-products=\"type-3\" data-hover=\"swap\">\n<li class=\"product type-product post-63535 status-publish first instock product_cat-automotive-repair-maintenance-equipment product_cat-cooling-system-tester-and-filler product_tag-fluid-testing product_tag-measurement-tools product_tag-multi-warehouse-shipping has-post-thumbnail shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-as509-coolant-boiling-pointtester\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/01\/coolant-boiling-pointtester1-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL AS509 Coolant Boiling Point Tester\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/01\/coolant-boiling-pointtester1-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/01\/coolant-boiling-pointtester1-1024x1024.jpg 1024w, https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/01\/coolant-boiling-pointtester1-150x150.jpg 150w, https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/01\/coolant-boiling-pointtester1-768x768.jpg 768w, https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/01\/coolant-boiling-pointtester1-1536x1536.jpg 1536w, https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/01\/coolant-boiling-pointtester1-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/01\/coolant-boiling-pointtester1-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/01\/coolant-boiling-pointtester1-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2026\/01\/coolant-boiling-pointtester1.jpg 1600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL AS509 Coolant Boiling Point Tester<\/h2>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-63535\" data-product-id=\"63535\"><span class=\"autool-card-from-price\" data-autool-price-mode=\"from\">From <span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">US&#036;<\/span>79.00<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-as509-coolant-boiling-pointtester\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_63535\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"63535\" data-product_sku=\"MMT988\" aria-label=\"Pasirinkti savybes: \u201cAUTOOL AS509 Coolant Boiling Point Tester\u201d\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Pasirinkti savybes<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_63535\" class=\"screen-reader-text\">\n\t\tThis product has multiple variants. 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The options may be chosen on the product page\t<\/span>\n<\/div><\/li>\n<li class=\"product type-product post-29976 status-publish instock product_cat-automotive-repair-maintenance-equipment product_cat-pulsating-brake-fluid-exchanger product_tag-best-seller product_tag-brake-bleeding-kit product_tag-brake-fluid-change-kit product_tag-brake-fluid-change-service product_tag-brake-fluid-changing-tool product_tag-brake-fluid-exchanger product_tag-brake-fluid-flush-kit product_tag-brake-fluid-replacement product_tag-brake-fluid-service product_tag-brake-oil-changer product_tag-multi-warehouse-shipping product_tag-new-arrival product_tag-one-person-brake-bleed product_tag-voltage-options has-post-thumbnail shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-ast609-car-pulsating-brake-fluid-changer\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/97b9e70a4f4513b62f049142da16ff37-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL AST609 Car Pulsating Brake Fluid Change Kit\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/97b9e70a4f4513b62f049142da16ff37-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/97b9e70a4f4513b62f049142da16ff37-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/97b9e70a4f4513b62f049142da16ff37-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/97b9e70a4f4513b62f049142da16ff37-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/97b9e70a4f4513b62f049142da16ff37-150x150.jpg 150w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/97b9e70a4f4513b62f049142da16ff37-768x768.jpg 768w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/97b9e70a4f4513b62f049142da16ff37.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL AST609 Car Pulsating Brake Fluid Change Kit<\/h2><div class=\"star-rating\" role=\"img\" aria-label=\"\u012evertinimas: 5.00 i\u0161 5\" data-no-translation-aria-label=\"\"><span style=\"width:100%\" data-no-translation=\"\" data-trp-gettext=\"\">\u012evertinimas: <strong class=\"rating\">5.00<\/strong> i\u0161 5<\/span><\/div>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-29976\" data-product-id=\"29976\"><span class=\"autool-card-from-price\" data-autool-price-mode=\"from\">From <span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">US&#036;<\/span>259.00<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-ast609-car-pulsating-brake-fluid-changer\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_29976\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"29976\" data-product_sku=\"MMT906-1\/MMT906\" aria-label=\"Pasirinkti savybes: \u201cAUTOOL AST609 Car Pulsating Brake Fluid Change Kit\u201d\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Pasirinkti savybes<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_29976\" class=\"screen-reader-text\">\n\t\tThis product has multiple variants. The options may be chosen on the product page\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-ast609-car-pulsating-brake-fluid-changer\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_29976\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"29976\" data-product_sku=\"MMT906-1\/MMT906\" aria-label=\"Pasirinkti savybes: \u201cAUTOOL AST609 Car Pulsating Brake Fluid Change Kit\u201d\" rel=\"nofollow\" data-no-translation-aria-label=\"\"><span class=\"autool-card-button-icon\" aria-hidden=\"true\"><svg viewbox=\"0 0 18 18\" focusable=\"false\" role=\"presentation\"><path d=\"M5.2 5.4h11.1l-1.2 5.5a2 2 0 0 1-2 1.6H7.4a2 2 0 0 1-2-1.6L4.2 2.8H2.1\" \/><circle cx=\"7.6\" cy=\"15\" r=\"1.1\" \/><circle cx=\"13.1\" cy=\"15\" r=\"1.1\" \/><\/svg><\/span><span class=\"autool-card-button-label\" data-no-translation=\"\" data-trp-gettext=\"\">Pasirinkti savybes<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_29976\" class=\"screen-reader-text\">\n\t\tThis product has multiple variants. The options may be chosen on the product page\t<\/span>\n<\/div><\/li>\n<li class=\"product type-product post-40035 status-publish instock product_cat-automotive-repair-testing-equipment product_cat-oil-analysis-tester product_tag-fluid-testing product_tag-measurement-tools product_tag-multi-warehouse-shipping product_tag-package-options has-post-thumbnail sale shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-as502-car-brake-fluid-tester\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\n\t<span class=\"onsale\" data-shape=\"type-2\">SALE<\/span>\n\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS502-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL AS502 Car Brake Fluid Tester For Water Content Testing\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS502-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS502-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS502-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS502-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS502-150x150.jpg 150w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS502-768x768.jpg 768w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS502.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL AS502 Car Brake Fluid Tester For Water Content Testing<\/h2><div class=\"star-rating\" role=\"img\" aria-label=\"\u012evertinimas: 5.00 i\u0161 5\" data-no-translation-aria-label=\"\"><span style=\"width:100%\" data-no-translation=\"\" data-trp-gettext=\"\">\u012evertinimas: <strong class=\"rating\">5.00<\/strong> i\u0161 5<\/span><\/div>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-40035\" data-product-id=\"40035\"><span class=\"autool-card-from-price\" data-autool-price-mode=\"from\">From <span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">US&#036;<\/span>29.90<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-as502-car-brake-fluid-tester\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_40035\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"40035\" data-product_sku=\"MMT611\" aria-label=\"Pasirinkti savybes: \u201cAUTOOL AS502 Car Brake Fluid Tester For Water Content Testing\u201d\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Pasirinkti savybes<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_40035\" class=\"screen-reader-text\">\n\t\tThis product has multiple variants. The options may be chosen on the product page\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-as502-car-brake-fluid-tester\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_40035\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"40035\" data-product_sku=\"MMT611\" aria-label=\"Pasirinkti savybes: \u201cAUTOOL AS502 Car Brake Fluid Tester For Water Content Testing\u201d\" rel=\"nofollow\" data-no-translation-aria-label=\"\"><span class=\"autool-card-button-icon\" aria-hidden=\"true\"><svg viewbox=\"0 0 18 18\" focusable=\"false\" role=\"presentation\"><path d=\"M5.2 5.4h11.1l-1.2 5.5a2 2 0 0 1-2 1.6H7.4a2 2 0 0 1-2-1.6L4.2 2.8H2.1\" \/><circle cx=\"7.6\" cy=\"15\" r=\"1.1\" \/><circle cx=\"13.1\" cy=\"15\" r=\"1.1\" \/><\/svg><\/span><span class=\"autool-card-button-label\" data-no-translation=\"\" data-trp-gettext=\"\">Pasirinkti savybes<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_40035\" class=\"screen-reader-text\">\n\t\tThis product has multiple variants. The options may be chosen on the product page\t<\/span>\n<\/div><\/li>\n<li class=\"product type-product post-30203 status-publish instock product_cat-automotive-repair-maintenance-equipment product_cat-pulsating-brake-fluid-exchanger product_tag-best-seller product_tag-brake-fluid-service product_tag-multi-warehouse-shipping has-post-thumbnail shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-ast618-pulsating-brake-fluid-exchanger\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/AST618-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL AST618 Pulsating Brake Fluid Exchanger Four-Wheel Oil Change\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/AST618-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/AST618-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/AST618-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/AST618-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/AST618-150x150.jpg 150w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/AST618-768x768.jpg 768w, https:\/\/autoolstore.com\/wp-content\/uploads\/2021\/06\/AST618.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL AST618 Pulsating Brake Fluid Exchanger Four-Wheel Oil Change<\/h2><div class=\"star-rating\" role=\"img\" aria-label=\"\u012evertinimas: 4.97 i\u0161 5\" data-no-translation-aria-label=\"\"><span style=\"width:99.4%\" data-no-translation=\"\" data-trp-gettext=\"\">\u012evertinimas: <strong class=\"rating\">4.97<\/strong> i\u0161 5<\/span><\/div>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-30203\" data-product-id=\"30203\"><span class=\"autool-card-from-price\" data-autool-price-mode=\"from\">From <span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">US&#036;<\/span>899.00<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-ast618-pulsating-brake-fluid-exchanger\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_30203\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"30203\" data-product_sku=\"MCD11314-1\" aria-label=\"Pasirinkti savybes: \u201cAUTOOL AST618 Pulsating Brake Fluid Exchanger Four-Wheel Oil Change\u201d\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Pasirinkti savybes<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_30203\" class=\"screen-reader-text\">\n\t\tThis product has multiple variants. The options may be chosen on the product page\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/lt\/product\/autool-ast618-pulsating-brake-fluid-exchanger\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_30203\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"30203\" data-product_sku=\"MCD11314-1\" aria-label=\"Pasirinkti savybes: \u201cAUTOOL AST618 Pulsating Brake Fluid Exchanger Four-Wheel Oil Change\u201d\" rel=\"nofollow\" data-no-translation-aria-label=\"\"><span class=\"autool-card-button-icon\" aria-hidden=\"true\"><svg viewbox=\"0 0 18 18\" focusable=\"false\" role=\"presentation\"><path d=\"M5.2 5.4h11.1l-1.2 5.5a2 2 0 0 1-2 1.6H7.4a2 2 0 0 1-2-1.6L4.2 2.8H2.1\" \/><circle cx=\"7.6\" cy=\"15\" r=\"1.1\" \/><circle cx=\"13.1\" cy=\"15\" r=\"1.1\" \/><\/svg><\/span><span class=\"autool-card-button-label\" data-no-translation=\"\" data-trp-gettext=\"\">Pasirinkti savybes<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_30203\" class=\"screen-reader-text\">\n\t\tThis product has multiple variants. The options may be chosen on the product page\t<\/span>\n<\/div><\/li>\n<li class=\"product type-product post-38913 status-publish last instock product_cat-automotive-repair-testing-equipment product_cat-battery-system-tester product_tag-autool-bt880 product_tag-battery-diagnostics product_tag-battery-tester-analyzer product_tag-best-seller product_tag-bt880 product_tag-bt880-battery-tester product_tag-leak-detection product_tag-measurement-tools product_tag-multi-warehouse-shipping has-post-thumbnail shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/autoolstore.com\/lt\/product\/battery-tester\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2023\/09\/ad03237eeeef0acdb84974db7af9c2a4-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL BT880 Car Load Battery Tester Leakage Test with Built-in Temperature Sensor\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2023\/09\/ad03237eeeef0acdb84974db7af9c2a4-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2023\/09\/ad03237eeeef0acdb84974db7af9c2a4-150x150.jpg 150w, https:\/\/autoolstore.com\/wp-content\/uploads\/2023\/09\/ad03237eeeef0acdb84974db7af9c2a4-768x768.jpg 768w, https:\/\/autoolstore.com\/wp-content\/uploads\/2023\/09\/ad03237eeeef0acdb84974db7af9c2a4-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2023\/09\/ad03237eeeef0acdb84974db7af9c2a4-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2023\/09\/ad03237eeeef0acdb84974db7af9c2a4-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2023\/09\/ad03237eeeef0acdb84974db7af9c2a4.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL BT880 Car Load Battery Tester Leakage Test with Built-in Temperature Sensor<\/h2><div class=\"star-rating\" role=\"img\" aria-label=\"\u012evertinimas: 5.00 i\u0161 5\" data-no-translation-aria-label=\"\"><span style=\"width:100%\" data-no-translation=\"\" data-trp-gettext=\"\">\u012evertinimas: <strong class=\"rating\">5.00<\/strong> i\u0161 5<\/span><\/div>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-38913\" data-product-id=\"38913\"><span class=\"autool-card-from-price\" data-autool-price-mode=\"from\">From <span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">US&#036;<\/span>109.90<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/lt\/product\/battery-tester\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_38913\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"38913\" data-product_sku=\"MMT604\" aria-label=\"Pasirinkti savybes: \u201cAUTOOL BT880 Car Load Battery Tester Leakage Test with Built-in Temperature Sensor\u201d\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Pasirinkti savybes<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_38913\" class=\"screen-reader-text\">\n\t\tThis product has multiple variants. The options may be chosen on the product page\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/lt\/product\/battery-tester\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_38913\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"38913\" data-product_sku=\"MMT604\" aria-label=\"Pasirinkti savybes: \u201cAUTOOL BT880 Car Load Battery Tester Leakage Test with Built-in Temperature Sensor\u201d\" rel=\"nofollow\" data-no-translation-aria-label=\"\"><span class=\"autool-card-button-icon\" aria-hidden=\"true\"><svg viewbox=\"0 0 18 18\" focusable=\"false\" role=\"presentation\"><path d=\"M5.2 5.4h11.1l-1.2 5.5a2 2 0 0 1-2 1.6H7.4a2 2 0 0 1-2-1.6L4.2 2.8H2.1\" \/><circle cx=\"7.6\" cy=\"15\" r=\"1.1\" \/><circle cx=\"13.1\" cy=\"15\" r=\"1.1\" \/><\/svg><\/span><span class=\"autool-card-button-label\" data-no-translation=\"\" data-trp-gettext=\"\">Pasirinkti savybes<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_38913\" class=\"screen-reader-text\">\n\t\tThis product has multiple variants. The options may be chosen on the product page\t<\/span>\n<\/div><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"autool-guide-57618\" class=\"ag-block ag-related-blogs autool-related-guide\" aria-labelledby=\"related-blogs-title-57618\">\n<div class=\"ag-section-header\">\n  <span class=\"ag-section-kicker\">Related Blogs<\/span><br \/>\n  <span class=\"ag-section-line\" aria-hidden=\"true\"><\/span>\n<\/div>\n<h2 id=\"related-blogs-title-57618\" class=\"ag-heading\">Related Blogs<\/h2>\n<div class=\"autool-hp-blog-grid autool-related-media-grid\" aria-label=\"AUTOOL related guide cards\">\n  <a class=\"autool-hp-blog-card\" href=\"\/lt\/brake-fluid-change\/\"><\/p>\n<div class=\"autool-hp-blog-card__img-wrap\"><img src=\"\/wp-content\/uploads\/2025\/11\/475d4abdfdcb64582793a1fb68ce3623.png\" alt=\"How to do a Brake Fluid Flush - Check it and change it yourself!\" loading=\"lazy\" decoding=\"async\" \/><\/div>\n<div class=\"autool-hp-blog-card__body\">\n      <span class=\"autool-hp-blog-card__cat\">Tips &amp; Tutorials<\/span><\/p>\n<h3 class=\"autool-hp-blog-card__title\">How to do a Brake Fluid Flush &#8211; Check it and change it yourself!<\/h3>\n<div class=\"autool-hp-blog-card__footer\"><span class=\"autool-hp-blog-card__date\">11\/30\/2025<\/span><span class=\"autool-hp-blog-card__read\">Read \u2192<\/span><\/div>\n<\/p><\/div>\n<p>  <\/a><\/p>\n<p>  <a class=\"autool-hp-blog-card\" href=\"\/lt\/how-often-should-you-perform-a-brake-fluid-change-on-your-car\/\"><\/p>\n<div class=\"autool-hp-blog-card__img-wrap\"><img src=\"\/wp-content\/uploads\/2025\/11\/d4ca1b60-0abc-4784-b13b-0a92beac3683.png\" alt=\"How often should you perform a brake fluid change on your car?\" loading=\"lazy\" decoding=\"async\" \/><\/div>\n<div class=\"autool-hp-blog-card__body\">\n      <span class=\"autool-hp-blog-card__cat\">Purchase Guides<\/span><\/p>\n<h3 class=\"autool-hp-blog-card__title\">How often should you perform a brake fluid change on your car?<\/h3>\n<div class=\"autool-hp-blog-card__footer\"><span class=\"autool-hp-blog-card__date\">11\/12\/2025<\/span><span class=\"autool-hp-blog-card__read\">Read \u2192<\/span><\/div>\n<\/p><\/div>\n<p>  <\/a><\/p>\n<p>  <a class=\"autool-hp-blog-card\" href=\"\/lt\/see-whats-hidden-in-your-fluids-autool-full-series-fluid-testers\/\"><\/p>\n<div class=\"autool-hp-blog-card__img-wrap\"><img src=\"\/wp-content\/uploads\/2026\/03\/c52aa84654f73f83b716e4ac1266d6f0.png\" alt=\"See What's Hidden in Your Fluids AUTOOL Full Series Fluid Testers\" loading=\"lazy\" decoding=\"async\" \/><\/div>\n<div class=\"autool-hp-blog-card__body\">\n      <span class=\"autool-hp-blog-card__cat\">Product Presentation<\/span><\/p>\n<h3 class=\"autool-hp-blog-card__title\">See What&#8217;s Hidden in Your Fluids AUTOOL Full Series Fluid Testers<\/h3>\n<div class=\"autool-hp-blog-card__footer\"><span class=\"autool-hp-blog-card__date\">03\/23\/2026<\/span><span class=\"autool-hp-blog-card__read\">Read \u2192<\/span><\/div>\n<\/p><\/div>\n<p>  <\/a><\/p>\n<p>  <a class=\"autool-hp-blog-card\" href=\"\/lt\/ultimate-tire-service-package-all-your-tire-needs-covered\/\"><\/p>\n<div class=\"autool-hp-blog-card__img-wrap\"><img src=\"\/wp-content\/uploads\/2021\/06\/d22de3f4ee52ec7c232c0844de08e712.jpg\" alt=\"Ultimate Tire Service Package \u2013 All Your Tire Needs Covered\" loading=\"lazy\" decoding=\"async\" \/><\/div>\n<div class=\"autool-hp-blog-card__body\">\n      <span class=\"autool-hp-blog-card__cat\">Purchase Guides<\/span><\/p>\n<h3 class=\"autool-hp-blog-card__title\">Ultimate Tire Service Package \u2013 All Your Tire Needs Covered<\/h3>\n<div class=\"autool-hp-blog-card__footer\"><span class=\"autool-hp-blog-card__date\">03\/26\/2026<\/span><span class=\"autool-hp-blog-card__read\">Read \u2192<\/span><\/div>\n<\/p><\/div>\n<p>  <\/a>\n<\/div>\n<\/section>\n<p><\/main><\/p>","protected":false},"excerpt":{"rendered":"<p>Brake Fluid Testing Guide What Are Brake Fluid Testers and Are They Worth It? To keep the braking system in optimal condition, brake fluid should typically be replaced every two to three years. In some cases, brake fluid may degrade faster because of hard braking, leaks, or system maintenance, so it is important to check [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[96,102],"tags":[],"hf_cat_post":[4522],"class_list":["post-57618","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-autool-blog","category-tech-trends"],"blocksy_meta":[],"meta_box":[],"_links":{"self":[{"href":"https:\/\/autoolstore.com\/lt\/wp-json\/wp\/v2\/posts\/57618","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoolstore.com\/lt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/autoolstore.com\/lt\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/lt\/wp-json\/wp\/v2\/comments?post=57618"}],"version-history":[{"count":2,"href":"https:\/\/autoolstore.com\/lt\/wp-json\/wp\/v2\/posts\/57618\/revisions"}],"predecessor-version":[{"id":72759,"href":"https:\/\/autoolstore.com\/lt\/wp-json\/wp\/v2\/posts\/57618\/revisions\/72759"}],"wp:attachment":[{"href":"https:\/\/autoolstore.com\/lt\/wp-json\/wp\/v2\/media?parent=57618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/autoolstore.com\/lt\/wp-json\/wp\/v2\/categories?post=57618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/autoolstore.com\/lt\/wp-json\/wp\/v2\/tags?post=57618"},{"taxonomy":"hf_cat_post","embeddable":true,"href":"https:\/\/autoolstore.com\/lt\/wp-json\/wp\/v2\/hf_cat_post?post=57618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}