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).
GM Goodwrench DEX-COOL® was developed in order to last
for 240,000 km (150,00 miles) or 5 years, whichever
occurs first. Follow the instructions in
Cooling System Draining and Filling
. Use only GM Goodwrench DEX-COOL®
or HAVOLINE® DEX-COOL® when adding or changing the coolant.
A 50/50 mixture of ethylene glycol DEX-COOL® and 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. |
