High Accuracy Radiator Coolant Tester

Check coolant freeze and boil points quickly so you can maintain your vehicle's cooling system and reduce the risk of overheating or freeze damage.

This radiator coolant tester uses a simple squeeze bulb and clear scale, making one-hand testing easy during routine maintenance, repair, or inspection.

Quick Coolant Checks for Reliable Maintenance

✅ Spot coolant problems early so you can avoid temperature-related engine issues.

✅ Read freeze and boil points clearly for faster maintenance decisions.

✅ Test with one hand to make checks easier in tight engine spaces.

✅ Use one tester across many vehicles with universal compatibility.

✅ Maintain ethylene glycol cooling systems with a simple manual tool.

✅ Check automotive, marine, and industrial systems with the same tester.

Suitable for cars, trucks, SUVs, motorcycles, RVs, boats, and other vehicles with ethylene glycol coolant systems. It also works for automotive, marine, and industrial cooling system checks.

Designed for both DIY users and professional mechanics, it helps with coolant condition testing, freeze point checks, boil point checks, and general cooling system maintenance.

Clear scale makes readings easier to see.

Universal design suits many coolant system checks.

Check your coolant quickly and maintain your cooling system with confidence.