1997 Oldsmobile Bravada Owner's Manual - Page 241
1997 Oldsmobile Bravada Manual
Page 241 highlights
1 NOTICE: Adding only plain water to your cooling system can be dangerous. Plain water, or some other liquid like alcohol, can boil before the proper coolant mix will. Your vehicle's coolant warning system is set for the proper coolant mix. With plain water or the wrong mix, your engine could get too hotbut you wouldn't get the overheat warning. Your engine could catch fire and you or others could be burned. Use a 50150 mix of clean water and DEX-COOL TM coolant. If you use an improper coolantmix, your engine could overheat andbe badly damaged. The repair cost wouldn't be covered by your warranty. Too much water in themix 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 retailer check your cooling system. NOTICE: If you use the proper coolant,you don't have to add extra inhibitors or additives which claim to improve the system. These can be harmful. 6-21