Coolant Description

This vehicle has a newly developed engine coolant. GM Goodwrench DEX-COOL(R) was developed to last for 240 000 km (150,O00 mi) or 5 years, whichever occurs first. Follow the instructions in Draining and Filling Cooling System. Make sure only GM Goodwrench DEX-COOL(R) (silicate-free) or HAVOLINE(R) DEX-COOL(R) is used when coolant is added or changed.

A 50/50 mixture of DEX-COOL(R) and clean drinkable water will provide the following protection:

Notice: Pure coolant 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, as the freeze level rises rapidly after this point. Pure coolant will freeze at -22° C (-8° F).

- Give freezing protection down to -37° C (-34° F).
- Give boiling protection up to 129° C (260° F).
- Protect against rust and corrosion.
- Help keep the proper engine temperature.
- Let the warning lights and gauges work correctly.