This vehicle was manufactured with GM Goodwrench DEX-COOLâ„¢.
GM Goodwrench DEX-COOLâ„¢ was developed to last for 240 000 km
(150,000 mi) or 5 years, whichever occurs first. Make sure only GM
Goodwrench DEX-COOLâ„¢ (orange-colored, silicate-free) is used when coolant
is added or changed. Follow the instructions in Draining/Filling Cooling
System.
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).
A 50/50 mixture of ethylene glycol (GM Goodwrench DEX-COOLâ„¢) and
water will provide the following protection:
| • | Give freezing protection down to -37°C (-34°F). |
| • | Give boiling protection up to 129°C (260°F). |
| • | Allow the sensors and switches to operate as designed. |
| • | Protect against rust and corrosion. |
| • | Help keep the proper engine temperature. |
| • | Let the warning lights and gauges work correctly. |
