Antifreeze Tester Automotive, Dial Type Antifreeze Coolant Tester Hydrometer Engine Coolant Anti Freeze Testers Automotive Universal Tool for Car System (Inhalation)
【1. ✅ Pro Guidance & Easy DIY—Save Time & Money! 】：Our professional coolant tester（antifreeze tester automotive） features a smart 2-in-1 design: the front side measures freeze protection from -45°F to 10°F (-43°C to -12°C), while the back side measures boiling point up to 265°F (129°C)—all with clear °F/°C dual scales. We include crystal-clear instructions so every user can accurately test engine coolant without professional help. No more long drives to the mechanic—our tester makes it easy to maintain your vehicle at home, saving both time and money.
【2. ⚠️ Safety First: Cool Down Before Opening】：Never open a hot radiator! U.S. vehicles use pressurized cooling systems. Always wait 1–2 hours after turning off the engine to avoid dangerous hot fluid spray.
【3. 🔧 Always Warm Up Engine Before Boiling Point Test】：For accurate boiling point results with this antifreeze tester automotive, run the engine 10–15 minutes until warm (195–220°F). This ensures proper coolant circulation and reliable readings, far more accurate than basic coolant test strips.
【4. 🧪 Fill to the Line—Precise Measurement Every Time】：Draw antifreeze coolant up to the fill mark. Too little and the hydrometer won't work; too much causes spills and incorrect results whether testing freeze point or boiling point.
【5. 🧹 Flush If Dirty or Rusty】：If engine coolant looks muddy or rusty (red-brown), flush and refill the system before testing. Dirty fluid damages engines and skews results—especially important when verifying an antifreeze coolant 50 50 mixture.
【6. 💧 Tap to Remove Bubbles】：Gently tap this coolant hydrometer to release air bubbles. Bubbles can make readings too high—eliminate them for accuracy in both freeze and boil tests.
【7. 📏 Hold Vertically for Correct Reading】：Keep the tester straight up and down. If it's tilted, the reading will not be reliable—when you're testing antifreeze coolant or boiling point.
【8. 🔍 Dual-Scale Clarity: No Guesswork Needed】：The large pointer shows exact temperatures—freeze protection on the front, boiling point on the back. Far easier and more reliable than interpreting coolant test strips.
【9. 🧼 Rinse After Use—Quick & Easy Cleanup】：Just rinse with warm soapy water after each use. Prevents residue buildup and keeps your coolant tester accurate for the next vehicle.
【10. 🗺️ Calibrated for U.S. Standards】：Accurate for sea level with a standard 15 PSI radiator cap—perfect for testing antifreeze coolant 50 50 mixtures in most driving conditions across the U.S.
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