Suitable for testing Propylene Glycol coolant (anti-freeze) density. The five floating discs enable accurate readings in both Celsius and Fahrenheit as well as testing hot and cold and measuring the condition of the anti-freeze. Contents: ...

For testing methanol and ethylene glycol. With green and white scales. Green scale should be used when the engine is hot and white scale should be used when the engine is cold. Testing range: Methanol -40°C -12°C, Ethylene Glycol -34°C -12°C. Manufac...