2005 Pontiac Montana Owner's Manual - Page 349
2005 Pontiac Montana Manual
Page 349 highlights
Notice: If you use an improper coolant mixture, your engine could overheat and be badly damaged. The repair cost would not be covered by your warranty. Too much water in the mixture can freeze and crack the engine, radiator, heater core and other parts. If you have to add coolant more than four times a year, have your dealer check your cooling system. Checking Coolant The coolant recovery tank is located on the driver's side of the vehicle, above the engine air cleaner/filter. See Engine Compartment Overview on page 5-12 for more information on location. Notice: If you use the proper coolant, you do not have to add extra inhibitors or additives which claim to improve the system. These can be harmful. The vehicle must be on a level surface. When your engine is cold, the coolant level should be at the FULL COLD mark, or a little higher. When your engine is warm, the level should be above the FULL COLD mark or a little higher. 5-23
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