1997 Chevrolet Astro Owner's Manual - Page 234

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