Cooling System & Antifreeze

Ethylene-glycol antifreeze protection by mixture ratio. A 50/50 mix is the standard all-season blend; never exceed about 70% glycol.

Antifreeze (Ethylene Glycol) Protection

Glycol %Freeze PointBoil Point (15 psi cap)
40%−12°F (−24°C)259°F (126°C)
50%−34°F (−37°C)265°F (129°C)
60%−62°F (−52°C)270°F (132°C)

Register free to view the full cooling reference including the 70% protection row, thermostat ratings, and coolant-type guidance.