Coolant

Notice: Antifreeze can be added to raise the boiling point of the coolant, but too much will affect the freezing point. Do not use a solution stronger than 70 percent antifreeze, as the freeze level rises rapidly after this point. Pure antifreeze will freeze at -22° C (-8° F).

This vehicle as a newly developed engine coolant. GM Goodwrench DEX-COOL(R) was developed in order to last for 240,000 km (1150,000 miles) or 5 years, whichever occurs first. Follow the instructions in Draining and Filling Cooling System. Use only GM Goodwrench DEX-COOL(R) or HAVOLINE(R) DEX-COOL(R) when adding or changing the coolant.
A 50/50 mixture of ethylene glycol DEX-COOL(R) and clean drinkable water will provide the following protection:
- Give freezing protection down to -37° C (-34° F)
- Give boiling protection up to 129° C (265° F)
- Protect against rust and corrosion
- Help keep the proper engine temperature
- Let the warning lights and gauges work as they should.