{"id":3544,"date":"2026-09-29T05:43:50","date_gmt":"2026-09-29T05:43:50","guid":{"rendered":"https:\/\/shop.autoboss.com\/?post_type=product&#038;p=3544"},"modified":"2026-10-09T08:20:31","modified_gmt":"2026-10-09T08:20:31","slug":"autool-as505-atf-exchanger-transmission-oil-tester","status":"publish","type":"product","link":"https:\/\/autoboss.com\/de\/product\/autool-as505-atf-exchanger-transmission-oil-tester\/","title":{"rendered":"AUTOOL AS505 Optical Transmission Fluid Tester with Temperature Readout"},"content":{"rendered":"<div class=\"abd-pd\" data-abd-version=\"1\">\n<header class=\"abd-hero\">\n<h3>Check ATF Clarity and Temperature Before Deciding on Service<\/h3>\n<p class=\"abd-lead\">The AS505 dips an optical probe into transmission fluid and shows its transmittance, fluid temperature and a clear status prompt on one backlit screen. Treat the reading as a screening reference alongside the vehicle condition, not as a stand-alone replacement decision.<\/p>\n<ul class=\"abd-facts\">\n<li>ATF Transmittance + Temperature<\/li>\n<li>800 mm Flexible Probe<\/li>\n<li>OK \/ Warning \/ Replace Prompts<\/li>\n<li>2.8-Inch Backlit LCD<\/li>\n<li>4 \u00d7 AAA Battery Power<\/li>\n<\/ul>\n<\/header>\n<section class=\"abd-sec\" id=\"abd-features\">\n<h4>Hauptmerkmale<\/h4>\n<ol class=\"abd-features\">\n<li>\n<h5>Optical Transmittance Probe<\/h5>\n<p>An integrated photoelectric transceiver sensor gives stable feedback on fluid clarity. Reduced transmittance may point to impurities, deposits or metal contamination.<\/p>\n<\/li>\n<li>\n<h5>Flexible Teflon Hose<\/h5>\n<p>Reaches service points easily and resists oil, oxidation and corrosion.<\/p>\n<\/li>\n<li>\n<h5>Fluid Temperature Readout<\/h5>\n<p>A built-in sensor shows the current fluid temperature, switchable between \u00b0C and \u00b0F.<\/p>\n<\/li>\n<li>\n<h5>Clear Result Indicators<\/h5>\n<p>OK for 100\u201350% transmittance, Warning for 50\u201330%, and Suggested Replacement below 30%, plus an analog bar graph.<\/p>\n<\/li>\n<li>\n<h5>Readable in Any Light<\/h5>\n<p>The backlit LCD stays legible in daylight, dim workshop corners or at night.<\/p>\n<\/li>\n<li>\n<h5>One-Hand Operation<\/h5>\n<p>A silicone-lined grip and light body make single-handed testing comfortable.<\/p>\n<\/li>\n<\/ol>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-box\">\n<h4>What&#8217;s in the Box<\/h4>\n<ul class=\"abd-box\">\n<li>AS505 transmission fluid tester with integrated 800 mm probe<\/li>\n<li>Bedienungsanleitung<\/li>\n<li>Retail box<\/li>\n<\/ul>\n<figure class=\"abd-fig\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/autool-catalog\/media\/0100aec55368e1826cc767fa.webp\" alt=\"AUTOOL AS505 transmission fluid tester with probe, retail box and user manual\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>Batteries are not listed in the package.<\/figcaption><\/figure>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-use\">\n<h4>Anwendung<\/h4>\n<ol class=\"abd-steps\">\n<li><b>Power on<\/b><span>Install four 1.5 V AAA batteries with correct polarity, then hold the power key for more than 2 seconds.<\/span><\/li>\n<li><b>Wipe the probe<\/b><span>Clean the probe tip so old oil or dirt does not affect the reading.<\/span><\/li>\n<li><b>Check the temperature<\/b><span>Make sure the engine is below 60 \u00b0C; switch between \u00b0C and \u00b0F if needed.<\/span><\/li>\n<li><b>Submerge the probe<\/b><span>Place the probe in the transmission fluid and keep it properly immersed.<\/span><\/li>\n<li><b>Test and read<\/b><span>Press the test button and read transmittance and fluid temperature on the display.<\/span><\/li>\n<\/ol>\n<p class=\"abd-note\">Display, results and troubleshooting: <a href=\"https:\/\/autoboss.com\/wp-content\/uploads\/autool-catalog\/media\/59bc0a2859f040cf043f2a1b.pdf\" target=\"_blank\" rel=\"noopener\">AS505 user manual (PDF)<\/a>.<\/p>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-notes\">\n<h4>Good to Know<\/h4>\n<div class=\"abd-notes\">\n<div class=\"abd-note-group is-caution\">\n<h5><span class=\"abd-tag\">Caution<\/span><\/h5>\n<ul>\n<li>Test only when the engine temperature is below 60 \u00b0C.<\/li>\n<li>Batteries are not listed in the package; prepare four 1.5 V AAA batteries.<\/li>\n<\/ul>\n<\/div>\n<div class=\"abd-note-group is-care\">\n<h5><span class=\"abd-tag\">Care<\/span><\/h5>\n<ul>\n<li>Wipe the probe clean before every measurement.<\/li>\n<li>A check every 5,000\u201310,000 km is recommended before deciding on transmission fluid service.<\/li>\n<li>For viscosity, wear metals or remaining service life, use the specified laboratory tests.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-faq\">\n<h4>FAQ<\/h4>\n<details class=\"abd-faq\" name=\"abd-faq\">\n<summary>Does the AS505 exchange or flush transmission fluid?<\/summary>\n<p>No. It only tests fluid transmittance and temperature; it does not drain, flush or refill.<\/p>\n<\/details>\n<details class=\"abd-faq\" name=\"abd-faq\">\n<summary>Can it test engine oil, brake fluid or power steering fluid?<\/summary>\n<p>It is designed for transmission fluid. Use the AS503 for engine oil, the AS501 or AS502 for brake fluid water content, the AS506 for brake fluid boiling point and the AS507 for power steering fluid.<\/p>\n<\/details>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>Optical Transmission-Fluid Screening:<\/strong> Measure automotive transmission-fluid transmittance and temperature before maintenance decisions.<\/li>\n<li><strong>Photoelectric Transmittance Probe:<\/strong> Use the photoelectric probe to screen changes in fluid transparency linked with impurities or deposits.<\/li>\n<li><strong>Temperature + Status Display:<\/strong> View oil temperature, transmittance, an analog bar, and OK, warning, or replacement guidance on the 2.8-inch backlit screen.<\/li>\n<li><strong>800 mm Flexible Hose:<\/strong> Reach service points with the oil-resistant, oxidation-resistant Teflon probe.<\/li>\n<\/ul>","protected":false},"featured_media":12435,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[128],"product_cat":[62,99],"product_tag":[],"class_list":["post-3544","product","type-product","status-publish","has-post-thumbnail","product_brand-autool","product_cat-best-selling-products","product_cat-fluid-testers","first","instock","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product\/3544","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/comments?post=3544"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/media\/12435"}],"wp:attachment":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/media?parent=3544"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_brand?post=3544"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_cat?post=3544"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_tag?post=3544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}