Anti freeze tester

A quick and inexpensive way to determine the degree of protection of your coolant and/or anti-freeze.
Indicates clearly to what extent the liquid is protected against frost. Also prevents overheating of the engine due to low temperature resistance of coolant. Testing is possible in hot and cold weather. Only remove the radiator cap when the engine has cooled down. Then run the engine until operating temperature is reached. Pump fluid up to fluid line. Tap out any air bubbles and hold the tester upright. Read the degree of protection with the clear arrow pointer.

• Suitable for Ethylene and Glycol solutions
• Works with cold and warm liquids
• Provides an optical check of rust and sediment