1998 GMC Safari Owner's Manual - Page 238

A CAUTION: Heater and radiator hoses, and other engine If parts, can be very hot. Don't touch them. you do, you can be burned. Don't run the engineif there is a leak. If you run the engine, it could lose all coolant. That could cause an engine fire,and you could beburned. Get any leak fixed before drive the vehicle. you How to Add Coolant to theCoolant Recovery Tank If you haven't founda problem yet, but the coolant level isn't at the ADD mark, add a 50/50 mixture of clean water (preferably distilled) and DEX-COOL@ engine coolant at the coolant recovery tank. (See "Engine Coolant" in the Index more information.) for I NOTICE: Engine damage from running your engine without coolant isn't covered by your warranty. If there seems to be no leak, start the engine again. See if the engine cooling fan speed increases when idle speedis doubled by pushing the accelerator pedal down. If it doesn't, your vehicle needs service. Turn off the engine. can be dangerous. Plain water, or some 0 t h liquid like alcohol, can boil beforethe proper coolant mixture will. Your vehicle's coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, your engine could get hot but you wouldn't too could get the overheat warning.Your engine. catch fire and you or others could beburned. Use a 50/50 mixture of clean waterand DEX-COOL@coolant. 5-16