2008 Pontiac G8 Owner's Manual - Page 199

Vehicle Service and Care Checking Coolant The coolant reservoir and dipstick is located in the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview on page 9-6 for more information on location. 1. Turn off the ignition. 3. When the engine is cold, the coolant level should be at or above the Min mark on the dipstick. After the vehicle has been driven and the engine is at normal operating temperature, the level should be somewhere between half full and the Max mark. 4. If the coolant level is correct, replace the dipstick and turn the cap one-eighth of a turn clockwise. Adding Coolant If you need more coolant, add the proper DEX-COOL® coolant mixture at the coolant reservoir, but only when the engine is cool. If the coolant reservoir is empty, a special fill procedure is necessary. See Engine Overheating on page 9-16 for instructions on "How to Add Coolant to the Cooling System." 9-15 { CAUTION You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol, and it will burn if the engine parts are hot enough. Do not spill coolant on a hot engine. When replacing the coolant reservoir cap, make sure it is hand-tight and fully seated. Radiator Pressure Cap Notice: The radiator cap on your vehicle is a pressure-type cap and must be tightly installed to prevent coolant loss and possible engine damage from overheating. Be sure the cap is properly closed. See Engine Compartment Overview on page 9-6 for more information on location. 2. Turn the coolant dipstick cap one-eighth of a turn counterclockwise and slowly pull the dipstick straight up.