{"id":27351,"date":"2021-07-17T09:30:41","date_gmt":"2021-07-17T01:30:41","guid":{"rendered":"https:\/\/shop.autooltech.com\/?p=27351"},"modified":"2026-05-18T18:59:12","modified_gmt":"2026-05-19T02:59:12","slug":"how-can-car-owners-determine-which-kind-of-fluid-is-leaking-from-underneath-the-car","status":"publish","type":"post","link":"https:\/\/autoolstore.com\/cs\/how-can-car-owners-determine-which-kind-of-fluid-is-leaking-from-underneath-the-car\/","title":{"rendered":"How can car owners determine which kind of fluid is leaking from underneath the car?"},"content":{"rendered":"<p><main class=\"autool-tire-guide\" id=\"fluid-leak-identification-guide-27351\"><\/p>\n<section aria-labelledby=\"fluid-leak-overview-title-27351\" class=\"ag-block ag-intro\" id=\"fluid-leak-overview-27351\">\n<div class=\"ag-section-header\">\n      <span class=\"ag-section-kicker is-accent\">Fluid Leak Guide<\/span><br \/>\n      <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n    <\/div>\n<div class=\"ag-lede\" id=\"fluid-leak-overview-title-27351\">\n<p>Experienced car owners will bend down every day before starting the vehicle to see if there is some oil leakage under the car. If the original dry ground has a small puddle of unknown liquid, then it is likely that there is an oil leak in some part of the car.<\/p>\n<p>There are generally three possibilities for fluid leaks: aging seals, failures, or damage caused by chassis bumps. The problem can be small or large, depending on whether the leakage is a critical fluid and how much fluid is leaking.<\/p>\n<p>If it is just a small pool of air conditioning condensate, then it is normal. If the leak is brake fluid or another safety-related fluid, early repair must be taken seriously.<\/p>\n<\/p><\/div>\n<nav aria-label=\"Fluid leak quick navigation\" class=\"ag-guide-strip\">\n      <a class=\"ag-guide-card\" href=\"#fluid-paper-test-27351\"><span class=\"ag-guide-card__num\">01<\/span><\/p>\n<h3 class=\"ag-guide-card__title\">White Paper Test<\/h3>\n<p class=\"ag-guide-card__text\">Use color and smell to identify the fluid quickly.<\/p>\n<p><\/a><br \/>\n      <a class=\"ag-guide-card\" href=\"#fluid-engine-oil-27351\"><span class=\"ag-guide-card__num\">02<\/span><\/p>\n<h3 class=\"ag-guide-card__title\">Engine Oil<\/h3>\n<p class=\"ag-guide-card__text\">Amber to dark brown or black, smooth, and hard to wipe off.<\/p>\n<p><\/a><br \/>\n      <a class=\"ag-guide-card\" href=\"#fluid-antifreeze-27351\"><span class=\"ag-guide-card__num\">05<\/span><\/p>\n<h3 class=\"ag-guide-card__title\">Antifreeze<\/h3>\n<p class=\"ag-guide-card__text\">Often sweet-smelling and more watery than oily.<\/p>\n<p><\/a><br \/>\n      <a class=\"ag-guide-card\" href=\"#fluid-brake-27351\"><span class=\"ag-guide-card__num\">06<\/span><\/p>\n<h3 class=\"ag-guide-card__title\">Brake Fluid<\/h3>\n<p class=\"ag-guide-card__text\">Safety-related fluid that should not be ignored.<\/p>\n<p><\/a><br \/>\n    <\/nav>\n<\/section>\n<div class=\"ag-content-layout\">\n<div class=\"ag-content-main\">\n<section aria-labelledby=\"fluid-paper-test-title-27351\" class=\"ag-block\" id=\"fluid-paper-test-27351\">\n<div class=\"ag-section-header\">\n          <span class=\"ag-section-kicker\">First check<\/span><br \/>\n          <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n        <\/div>\n<article class=\"ag-richtext\">\n<p class=\"ag-eyebrow\">Simple identification<\/p>\n<h2 class=\"ag-heading\" id=\"fluid-paper-test-title-27351\">Start With a White Paper Test<\/h2>\n<p>As an inexperienced car owner, the easiest way to quickly determine which kind of fluid is under the car is to find a piece of white paper, dip it in the oil on the ground, and then judge it based on its color and smell.<\/p>\n<\/article>\n<\/section>\n<section aria-labelledby=\"fluid-engine-oil-title-27351\" class=\"ag-block\" id=\"fluid-engine-oil-27351\">\n<div class=\"ag-section-header\">\n          <span class=\"ag-section-kicker\">Fluid type 01<\/span><br \/>\n          <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n        <\/div>\n<article class=\"ag-richtext\">\n<p class=\"ag-eyebrow\">Oil leaks<\/p>\n<h2 class=\"ag-heading\" id=\"fluid-engine-oil-title-27351\">Engine Oil Leaks<\/h2>\n<p>The freshly changed engine oil is usually a transparent amber color. With the increase of mileage, the color will gradually turn into dark brown, and generally becomes black at about 10,000 kilometers.<\/p>\n<p>Rub your fingers together and you will find that it is particularly smooth and hard to wipe off. Oil may seep out from the front or rear of the engine at the seal, or it may leak from the oil pan. Because of the complex engine structure, the engine can be said to have the most oil leaks.<\/p>\n<p>The first thing to do after finding an oil leak is to check the engine dipstick to see if the level is located above the minimum. If it is already below the minimum, remember to add 1 liter of oil temporarily before taking the car to a repair shop for treatment.<\/p>\n<\/article>\n<\/section>\n<section aria-labelledby=\"fluid-transmission-title-27351\" class=\"ag-block\" id=\"fluid-transmission-27351\">\n<div class=\"ag-section-header\">\n          <span class=\"ag-section-kicker\">Fluid type 02<\/span><br \/>\n          <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n        <\/div>\n<article class=\"ag-richtext\">\n<p class=\"ag-eyebrow\">Transmission oil leakage<\/p>\n<h2 class=\"ag-heading\" id=\"fluid-transmission-title-27351\">Transmission Oil Leakage<\/h2>\n<p>The location of the transmission is usually against the left rear of the engine compartment. The transmission fluid is usually red-yellow in color, relatively clear, very smooth in texture, and generally thinner than engine oil.<\/p>\n<p>Transmission oil leakage is 90% caused by the aging of the seals, and the owner is not very good at checking the fluid level. Once the transmission leakage is serious, light leakage will cause shift frustration, and heavy leakage will damage the transmission.<\/p>\n<p>Because transmission repair costs are often very high and the repair sequelae are more, if there is a transmission leakage it must be inspected and repaired in time to avoid expanding losses.<\/p>\n<\/article>\n<\/section>\n<section aria-labelledby=\"fluid-steering-title-27351\" class=\"ag-block\" id=\"fluid-steering-27351\">\n<div class=\"ag-section-header\">\n          <span class=\"ag-section-kicker\">Fluid type 03<\/span><br \/>\n          <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n        <\/div>\n<article class=\"ag-richtext\">\n<p class=\"ag-eyebrow\">Steering power oil leakage<\/p>\n<h2 class=\"ag-heading\" id=\"fluid-steering-title-27351\">Steering Power Oil Leakage<\/h2>\n<p>Steering fluid is only available in cars with hydraulic power steering but not in cars with electronic power steering. The power steering fluid is usually red in color, and in some models it is shared with the transmission fluid.<\/p>\n<p>You can find the cap of the power steering fluid in the engine compartment and open it to check the level. Lack of power steering fluid will generally cause the steering wheel to become heavy and make a clicking noise.<\/p>\n<\/article>\n<\/section>\n<section aria-labelledby=\"fluid-antifreeze-title-27351\" class=\"ag-block\" id=\"fluid-antifreeze-27351\">\n<div class=\"ag-section-header\">\n          <span class=\"ag-section-kicker\">Fluid type 04<\/span><br \/>\n          <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n        <\/div>\n<article class=\"ag-richtext\">\n<p class=\"ag-eyebrow\">Antifreeze leakage<\/p>\n<h2 class=\"ag-heading\" id=\"fluid-antifreeze-title-27351\">Antifreeze Leakage<\/h2>\n<p>Antifreeze has the largest variety of colors, including pink, blue, green, and yellow, so judging by color may not be accurate. It is best to judge antifreeze by smell and texture.<\/p>\n<p>Antifreeze emits a sweet smell and has a texture more like water than oil, with little lubricity. Antifreeze leaks are usually found in the radiator at the front of the car and at the hose fittings nearby.<\/p>\n<p>Please check the coolant overflow tank to see what is in the radiator. Is the overflow tank empty? Maybe you have found your problem. The antifreeze level can also be checked yourself, and there is usually a translucent antifreeze jug in the engine compartment with a scale printed on it.<\/p>\n<p>Note that you should never open the lid of the jug when the car is hot. Because of the high pressure inside, rashly opening the lid will burn you like opening the lid of a pressure cooker.<\/p>\n<\/article>\n<\/section>\n<section aria-labelledby=\"fluid-brake-title-27351\" class=\"ag-block\" id=\"fluid-brake-27351\">\n<div class=\"ag-section-header\">\n          <span class=\"ag-section-kicker\">Fluid type 05<\/span><br \/>\n          <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n        <\/div>\n<article class=\"ag-richtext\">\n<p class=\"ag-eyebrow\">Brake fluid leakage<\/p>\n<h2 class=\"ag-heading\" id=\"fluid-brake-title-27351\">Brake Fluid Leakage<\/h2>\n<p>Brake fluid is close to the color of motor oil and has a slippery texture, so it is easy to get confused with motor oil. However, brake fluid is corrosive, so the smell is much more pungent than motor oil.<\/p>\n<p>If the fluid on the ground emits a pungent metallic smell, then it is brake fluid. Brake fluid is vital to the safety of the car&#8217;s brakes and generally leaks close to the four wheels from the brake distributor pump.<\/p>\n<p>If there is a brake fluid leak, it is best not to continue driving. It is wise to call for help and have a tow truck take the car to a repair shop.<\/p>\n<\/article>\n<\/section>\n<section aria-labelledby=\"fluid-condensate-title-27351\" class=\"ag-block\" id=\"fluid-condensate-27351\">\n<div class=\"ag-section-header\">\n          <span class=\"ag-section-kicker\">Fluid type 06<\/span><br \/>\n          <span aria-hidden=\"true\" class=\"ag-section-line\"><\/span>\n        <\/div>\n<article class=\"ag-richtext\">\n<p class=\"ag-eyebrow\">Air conditioning condensate leaks<\/p>\n<h2 class=\"ag-heading\" id=\"fluid-condensate-title-27351\">Air Conditioning Condensate Leaks<\/h2>\n<p>Only in the summer, if there is a small puddle of colorless and odorless liquid on the ground, do not panic. It is just air conditioning condensate, which is a normal phenomenon.<\/p>\n<p>But if there is a lot of condensate on the ground, then you need to check whether the car&#8217;s air conditioning system has problems that cause the condenser to freeze.<\/p>\n<\/article>\n<\/section><\/div>\n<aside aria-label=\"Fluid leak sidebar\" class=\"ag-sidebar\">\n<section aria-labelledby=\"fluid-sidebar-title-27351\" class=\"ag-sidebar-widget is-white\">\n<h2 class=\"ag-sidebar-title\" id=\"fluid-sidebar-title-27351\">In This Article<\/h2>\n<nav aria-label=\"Fluid leak table of contents\" class=\"ag-side-nav\">\n          <a href=\"#fluid-paper-test-27351\"><span>01<\/span>White Paper Test<\/a><br \/>\n          <a href=\"#fluid-engine-oil-27351\"><span>02<\/span>Engine Oil<\/a><br \/>\n          <a href=\"#fluid-transmission-27351\"><span>03<\/span>Transmission Oil<\/a><br \/>\n          <a href=\"#fluid-steering-27351\"><span>04<\/span>Steering Fluid<\/a><br \/>\n          <a href=\"#fluid-antifreeze-27351\"><span>05<\/span>Antifreeze<\/a><br \/>\n          <a href=\"#fluid-brake-27351\"><span>06<\/span>Brake Fluid<\/a><br \/>\n          <a href=\"#fluid-condensate-27351\"><span>07<\/span>A\/C Condensate<\/a><br \/>\n          <a href=\"#related-products-title-27351\"><span>08<\/span>Related Products<\/a><br \/>\n          <a href=\"#related-blogs-title-27351\"><span>09<\/span>Related Blogs<\/a><br \/>\n        <\/nav>\n<\/section>\n<section aria-labelledby=\"fluid-key-title-27351\" class=\"ag-sidebar-widget is-white\">\n<h2 class=\"ag-sidebar-title\" id=\"fluid-key-title-27351\">Key Point<\/h2>\n<p class=\"ag-sidebar-copy\">Color, smell, texture, leak position, and amount all matter. Brake fluid and other safety-related leaks should be repaired early.<\/p>\n<\/section>\n<\/aside><\/div>\n<p><\/main><\/p>\n<p><!-- AUTOOL standardized post related cards 2026-05-15 START --><\/p>\n<div class=\"autool-tire-guide autool-standard-post-related\" data-standard-related-post=\"27351\">\n<section aria-labelledby=\"related-products-title-27351\" 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-27351\">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-29976 status-publish first 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\/cs\/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=\"Hodnocen\u00ed 5.00 z 5\" data-no-translation-aria-label=\"\"><span style=\"width:100%\" data-no-translation=\"\" data-trp-gettext=\"\">Hodnocen\u00ed <strong class=\"rating\">5.00<\/strong> z 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\/cs\/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=\"Vyberte nastaven\u00ed pro \u201eAUTOOL AST609 Car Pulsating Brake Fluid Change Kit\u201c\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">V\u00fdb\u011br mo\u017enost\u00ed<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_29976\" class=\"screen-reader-text\">\n\t\tTento produkt m\u00e1 v\u00edce variant. 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Mo\u017enosti lze vybrat na str\u00e1nce produktu\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\/cs\/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=\"Hodnocen\u00ed 4.97 z 5\" data-no-translation-aria-label=\"\"><span style=\"width:99.4%\" data-no-translation=\"\" data-trp-gettext=\"\">Hodnocen\u00ed <strong class=\"rating\">4.97<\/strong> z 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\/cs\/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=\"Vyberte nastaven\u00ed pro \u201eAUTOOL AST618 Pulsating Brake Fluid Exchanger Four-Wheel Oil Change\u201c\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">V\u00fdb\u011br mo\u017enost\u00ed<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_30203\" class=\"screen-reader-text\">\n\t\tTento produkt m\u00e1 v\u00edce variant. Mo\u017enosti lze vybrat na str\u00e1nce produktu\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/cs\/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=\"Vyberte nastaven\u00ed pro \u201eAUTOOL AST618 Pulsating Brake Fluid Exchanger Four-Wheel Oil Change\u201c\" 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=\"\">V\u00fdb\u011br mo\u017enost\u00ed<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_30203\" class=\"screen-reader-text\">\n\t\tTento produkt m\u00e1 v\u00edce variant. Mo\u017enosti lze vybrat na str\u00e1nce produktu\t<\/span>\n<\/div><\/li>\n<li class=\"product type-product post-32627 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 has-post-thumbnail shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/autoolstore.com\/cs\/product\/autool-as506-brake-fluid-tester-12-24v-automotive-brake-oil-tester-compatible-for-dot3-dot4-dot5-1-env4-env6-ate-trw-bosch-mobil\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS506-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL AS506 Automobile Brake Fluid Tester\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS506-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS506-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS506-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS506-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS506-150x150.jpg 150w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS506-768x768.jpg 768w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/03\/AS506.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL AS506 Automobile Brake Fluid Tester<\/h2><div class=\"star-rating\" role=\"img\" aria-label=\"Hodnocen\u00ed 4.96 z 5\" data-no-translation-aria-label=\"\"><span style=\"width:99.2%\" data-no-translation=\"\" data-trp-gettext=\"\">Hodnocen\u00ed <strong class=\"rating\">4.96<\/strong> z 5<\/span><\/div>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-32627\" data-product-id=\"32627\"><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>71.90<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/cs\/product\/autool-as506-brake-fluid-tester-12-24v-automotive-brake-oil-tester-compatible-for-dot3-dot4-dot5-1-env4-env6-ate-trw-bosch-mobil\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_32627\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"32627\" data-product_sku=\"MCD11314-10\" aria-label=\"Vyberte nastaven\u00ed pro \u201eAUTOOL AS506 Automobile Brake Fluid Tester\u201c\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">V\u00fdb\u011br mo\u017enost\u00ed<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_32627\" class=\"screen-reader-text\">\n\t\tTento produkt m\u00e1 v\u00edce variant. Mo\u017enosti lze vybrat na str\u00e1nce produktu\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/cs\/product\/autool-as506-brake-fluid-tester-12-24v-automotive-brake-oil-tester-compatible-for-dot3-dot4-dot5-1-env4-env6-ate-trw-bosch-mobil\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_32627\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"32627\" data-product_sku=\"MCD11314-10\" aria-label=\"Vyberte nastaven\u00ed pro \u201eAUTOOL AS506 Automobile Brake Fluid Tester\u201c\" 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=\"\">V\u00fdb\u011br mo\u017enost\u00ed<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_32627\" class=\"screen-reader-text\">\n\t\tTento produkt m\u00e1 v\u00edce variant. Mo\u017enosti lze vybrat na str\u00e1nce produktu\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\/cs\/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=\"Hodnocen\u00ed 5.00 z 5\" data-no-translation-aria-label=\"\"><span style=\"width:100%\" data-no-translation=\"\" data-trp-gettext=\"\">Hodnocen\u00ed <strong class=\"rating\">5.00<\/strong> z 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\/cs\/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=\"Vyberte nastaven\u00ed pro \u201eAUTOOL AS502 Car Brake Fluid Tester For Water Content Testing\u201c\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">V\u00fdb\u011br mo\u017enost\u00ed<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_40035\" class=\"screen-reader-text\">\n\t\tTento produkt m\u00e1 v\u00edce variant. Mo\u017enosti lze vybrat na str\u00e1nce produktu\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/cs\/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=\"Vyberte nastaven\u00ed pro \u201eAUTOOL AS502 Car Brake Fluid Tester For Water Content Testing\u201c\" 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=\"\">V\u00fdb\u011br mo\u017enost\u00ed<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_40035\" class=\"screen-reader-text\">\n\t\tTento produkt m\u00e1 v\u00edce variant. Mo\u017enosti lze vybrat na str\u00e1nce produktu\t<\/span>\n<\/div><\/li>\n<li class=\"product type-product post-40201 status-publish last 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\/cs\/product\/autool-as503-engine-oil-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\/10\/7b20ad772323c813d516108e1f09f330-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"AUTOOL AS503 Engine Oil Tester with Digital Display\" srcset=\"https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/10\/7b20ad772323c813d516108e1f09f330-300x300.jpg 300w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/10\/7b20ad772323c813d516108e1f09f330-100x100.jpg 100w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/10\/7b20ad772323c813d516108e1f09f330-600x600.jpg 600w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/10\/7b20ad772323c813d516108e1f09f330-500x500.jpg 500w, https:\/\/autoolstore.com\/wp-content\/uploads\/2025\/10\/7b20ad772323c813d516108e1f09f330.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">AUTOOL AS503 Engine Oil Tester with Digital Display<\/h2><div class=\"star-rating\" role=\"img\" aria-label=\"Hodnocen\u00ed 5.00 z 5\" data-no-translation-aria-label=\"\"><span style=\"width:100%\" data-no-translation=\"\" data-trp-gettext=\"\">Hodnocen\u00ed <strong class=\"rating\">5.00<\/strong> z 5<\/span><\/div>\n\t<span class=\"price\"><span class=\"wcpbc-price wcpbc-price-40201\" data-product-id=\"40201\"><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>38.90<\/span><\/span><\/span><\/span>\n<\/a><a href=\"https:\/\/autoolstore.com\/cs\/product\/autool-as503-engine-oil-tester\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_40201\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"40201\" data-product_sku=\"MMT611-1\" aria-label=\"Vyberte nastaven\u00ed pro \u201eAUTOOL AS503 Engine Oil Tester with Digital Display\u201c\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">V\u00fdb\u011br mo\u017enost\u00ed<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_40201\" class=\"screen-reader-text\">\n\t\tTento produkt m\u00e1 v\u00edce variant. Mo\u017enosti lze vybrat na str\u00e1nce produktu\t<\/span>\n<div class=\"autool-card-bottom-actions\" data-autool-card-layer=\"bottom-cart\"><a href=\"https:\/\/autoolstore.com\/cs\/product\/autool-as503-engine-oil-tester\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_40201\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"40201\" data-product_sku=\"MMT611-1\" aria-label=\"Vyberte nastaven\u00ed pro \u201eAUTOOL AS503 Engine Oil Tester with Digital Display\u201c\" 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=\"\">V\u00fdb\u011br mo\u017enost\u00ed<\/span><\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_40201\" class=\"screen-reader-text\">\n\t\tTento produkt m\u00e1 v\u00edce variant. Mo\u017enosti lze vybrat na str\u00e1nce produktu\t<\/span>\n<\/div><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"autool-guide-27351\" class=\"ag-block ag-related-blogs autool-related-guide\" aria-labelledby=\"related-blogs-title-27351\">\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><\/div>\n<h2 id=\"related-blogs-title-27351\" 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=\"\/cs\/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&#039;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&#039;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=\"\/cs\/dry-ice-blaster-for-industrial-cleaning-uses-safety-mold-removal-and-when-to-choose-it\/\"><\/p>\n<div class=\"autool-hp-blog-card__img-wrap\"><img src=\"\/wp-content\/uploads\/2024\/10\/HTS705-1.jpg\" alt=\"Dry Ice Blaster for Industrial Cleaning: Uses, Safety, Mold Removal, and When to Choose It\" loading=\"lazy\" decoding=\"async\" \/><\/div>\n<div class=\"autool-hp-blog-card__body\">\n          <span class=\"autool-hp-blog-card__cat\">News &amp; Events<\/span><\/p>\n<h3 class=\"autool-hp-blog-card__title\">Dry Ice Blaster for Industrial Cleaning: Uses, Safety, Mold Removal, and When to Choose It<\/h3>\n<div class=\"autool-hp-blog-card__footer\"><span class=\"autool-hp-blog-card__date\">01\/08\/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=\"\/cs\/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=\"\/cs\/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<\/div>\n<p><!-- AUTOOL standardized post related cards 2026-05-15 END --><\/p>","protected":false},"excerpt":{"rendered":"<p>Fluid Leak Guide Experienced car owners will bend down every day before starting the vehicle to see if there is some oil leakage under the car. If the original dry ground has a small puddle of unknown liquid, then it is likely that there is an oil leak in some part of the car. There [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":31982,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[103],"tags":[],"hf_cat_post":[4517],"class_list":["post-27351","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tips-and-tutorials"],"blocksy_meta":[],"meta_box":[],"_links":{"self":[{"href":"https:\/\/autoolstore.com\/cs\/wp-json\/wp\/v2\/posts\/27351","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoolstore.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/autoolstore.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/cs\/wp-json\/wp\/v2\/comments?post=27351"}],"version-history":[{"count":0,"href":"https:\/\/autoolstore.com\/cs\/wp-json\/wp\/v2\/posts\/27351\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoolstore.com\/cs\/wp-json\/wp\/v2\/media\/31982"}],"wp:attachment":[{"href":"https:\/\/autoolstore.com\/cs\/wp-json\/wp\/v2\/media?parent=27351"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/autoolstore.com\/cs\/wp-json\/wp\/v2\/categories?post=27351"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/autoolstore.com\/cs\/wp-json\/wp\/v2\/tags?post=27351"},{"taxonomy":"hf_cat_post","embeddable":true,"href":"https:\/\/autoolstore.com\/cs\/wp-json\/wp\/v2\/hf_cat_post?post=27351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}