{"product_id":"brake-fluid-tester-pen","title":"Brake Fluid Tester Pen – 5 LED DOT 3 \u0026 DOT 4 Analyzer","description":"\u003ch2\u003eKnow Your Brakes Are Safe Before You Drive.\u003c\/h2\u003e\n\u003cp\u003eBrake fluid degrades over time — and when it absorbs too much moisture, your stopping power suffers. This \u003cstrong\u003ebrake fluid tester pen\u003c\/strong\u003e gives you an instant, accurate reading of your fluid's water content in seconds, right at the reservoir. No guesswork, no expensive shop visits. Just five LEDs and the confidence to drive safely.\u003c\/p\u003e\n\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0690\/5675\/7873\/files\/Se3565b80dada46ca8047cedd6a4bae33I.webp\" alt=\"Brake fluid tester pen with 5 LED indicators\" style=\"max-width:100%;margin:16px 0;\"\u003e\n\n\u003ch2\u003eWhy Every Driver Needs This Tool\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e🟢🟡🔴 \u003cstrong\u003e5 LED color-coded results\u003c\/strong\u003e — instant visual reading of water content percentage\u003c\/li\u003e\n  \u003cli\u003e🚗 \u003cstrong\u003eCompatible with DOT 3 \u0026amp; DOT 4\u003c\/strong\u003e — works with the most common brake fluid types\u003c\/li\u003e\n  \u003cli\u003e⚡ \u003cstrong\u003eResults in 1 second\u003c\/strong\u003e — dip the probes, press the button, read the result\u003c\/li\u003e\n  \u003cli\u003e🔋 \u003cstrong\u003eAuto shut-off\u003c\/strong\u003e — powers off automatically after 15 seconds of inactivity\u003c\/li\u003e\n  \u003cli\u003e💪 \u003cstrong\u003eCompact \u0026amp; pocket-sized\u003c\/strong\u003e — easy to store in your glove box or toolbox\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCE, FCC \u0026amp; RoHS certified\u003c\/strong\u003e — meets international safety standards\u003c\/li\u003e\n  \u003cli\u003e🔍 \u003cstrong\u003eConductivity-based detection\u003c\/strong\u003e — accurate measurement of moisture-induced conductivity changes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eReading the Results — 5 LEDs Explained\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003ebrake fluid tester\u003c\/strong\u003e uses conductivity changes to measure moisture content in your fluid. Here's what each LED combination means:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e🟢 \u003cstrong\u003eGreen only\u003c\/strong\u003e — H₂O \u0026lt; 1.5% — Brake fluid is in excellent condition\u003c\/li\u003e\n  \u003cli\u003e🟢🟡 \u003cstrong\u003eGreen + Yellow\u003c\/strong\u003e — H₂O ~1.5% — Good condition, retest in 6 months\u003c\/li\u003e\n  \u003cli\u003e🟢🟡🟡 \u003cstrong\u003eGreen + 2 Yellow\u003c\/strong\u003e — H₂O ~2% — Acceptable, monitor closely\u003c\/li\u003e\n  \u003cli\u003e🟢🟡🟡🔴 \u003cstrong\u003eGreen + 2 Yellow + Red\u003c\/strong\u003e — H₂O ~3% — Replace brake fluid soon\u003c\/li\u003e\n  \u003cli\u003e🟢🟡🟡🔴🔴 \u003cstrong\u003eAll 5 LEDs\u003c\/strong\u003e — H₂O \u0026gt; 4% — Replace immediately — dangerous condition\u003c\/li\u003e\n  \u003cli\u003e🔴 \u003cstrong\u003eRed flashing\u003c\/strong\u003e — Battery needs replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible fluids:\u003c\/strong\u003e DOT 3, DOT 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndicators:\u003c\/strong\u003e 5 LEDs (Green, Yellow, Red)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e 1x AAA LR03 1.5V (not included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto shut-off:\u003c\/strong\u003e After ~15 seconds of inactivity\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~30g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE, FCC, RoHS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage includes:\u003c\/strong\u003e 1x brake fluid tester pen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eRemove the cap from the brake fluid reservoir\u003c\/li\u003e\n  \u003cli\u003ePull off the protective cap from the tester probe\u003c\/li\u003e\n  \u003cli\u003eDip the test probes into the brake fluid up to the plastic rim\u003c\/li\u003e\n  \u003cli\u003ePress the power button — green LED confirms battery is good\u003c\/li\u003e\n  \u003cli\u003eHold for 1 second and read the LED result\u003c\/li\u003e\n  \u003cli\u003ePress again to power off, or let it auto shut-off\u003c\/li\u003e\n  \u003cli\u003eRinse the probe with tap water after use\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠️ Safety note:\u003c\/strong\u003e If brake fluid contacts skin or clothing, wash thoroughly with water. Do not leave brake fluid exposed to air for extended periods — it is highly hygroscopic.\u003c\/p\u003e\n\n\u003ch2\u003eSmall Tool. Big Peace of Mind.\u003c\/h2\u003e\n\u003cp\u003eImagine knowing in seconds whether your brakes are ready for the road — before a long trip, before winter, before anything. This \u003cstrong\u003ebrake fluid tester pen\u003c\/strong\u003e is the kind of tool every driver should have and almost no one does. Stock is limited — add yours to the cart today.\u003c\/p\u003e","brand":"Cars Fanatics","offers":[{"title":"Default Title","offer_id":44028813017201,"sku":"\u003cnone\u003e","price":786000.0,"currency_code":"VND","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/5675\/7873\/files\/Se3565b80dada46ca8047cedd6a4bae33I.webp?v=1786716544","url":"https:\/\/carsfanatics.store\/th\/products\/brake-fluid-tester-pen","provider":"Cars Fanatics","version":"1.0","type":"link"}