Are these antifreeze concentration testers reliable? If so, I think I am good for winter : r/MechanicAdvice

Test Antifreeze Coolant Concentration With a Refractometer

Coolant Tester Accessory,Automotive Antifreeze Tester

5-in-1 Automotive Battery Antifreeze Refractometer ATC

Are these antifreeze concentration testers reliable? If so, I

What oil? Viscosity, manufacture recommendations vs real world

Here's The ONLY WAY TO KNOW IF YOUR ANTIFREEZE COOLANT IS BAD

Not sure what to make of this, this is a coolant tester. Since

My bf put water in the windshield wiper fluid container. Is this a

New to midwest winters, is cold bad for reliability of car? : r

The antifreeze refractometer can be used for measuring the freezing point of glycol, antifreeze, coolant and battery Acid. It can also be used for

Antifreeze Refractometer Coolant Tester for Checking Freezing Point, Concentration of Ethylene Glycol, Battery Acid Condition, Freezing Point Meter

Safe to sleep in an idling car? : r/MechanicAdvice

How to Test Your Coolant/Antifreeze

So the block test went well but this is happening, can anyone

EFFORTLESSLY TEST YOUR ANTI FREEZE MIXTURE: Antifreeze, also known as coolant, is designed to prevent water from freezing up in cold climates and to

ABN Deluxe Antifreeze and Coolant Tester Hydrometer Tester – Automotive Antifreeze Tester for Ethylene Glycol Coolant