2008 Chevrolet HHR Owner's Manual - Page 286

3. Add the proper DEX-COOL® coolant mixture to the coolant fill port, up to the base of the port. See Engine Coolant on page 5-24 for more information about the proper coolant mixture. 4. Rinse or wipe any spilled coolant from the engine and the compartment. 6. Put the cap back on the coolant recovery tank, but leave the pressure cap off. 7. Start the engine and let it run until you can feel the upper radiator hose getting hot. Watch out for the engine cooling fan. 8. By this time, the coolant level inside the radiator filler port may be lower. If the level is lower, add more of the proper DEX-COOL® coolant mixture through the fill port until the level reaches the base of the fill port. 9. Then replace the pressure cap. At any time during this procedure, if coolant begins to flow out of the fill port, reinstall the pressure cap. Be sure the pressure cap is hand-tight and fully seated. 10. When the engine has cooled, check the coolant in the coolant recovery tank. The level in the coolant recovery tank should be at the COLD FILL line when the engine is cold. 5. Then fill the coolant recovery tank to the COLD FILL (A) line. 5-32