1998 Chevrolet Venture Owner's Manual - Page 315

NOTICE: Engine damage from running your engine without coolantisn't covered by your warranty. If there seems to be no leak, with the engine on, checkto see if the electric engine cooling fans are running.If the engine is overheating, bothfans should be running. If they aren't, your vehicle needs service. A CAUTION: Adding only plain water to your cooling system can be dangerous. Plain water, or some other liquid likealcohol, can boil before the proper coolant mixturewill. Your vehicle'scoolant warning system is set for the proper coolant mixture. With plain water or thewrong mixture, your engine couldget too hot butyou wouldn't get theoverheat warning. Your engine could catch fire and you or otherscould be burned. Use a 50/50 mixture of clean water and DEX-COOL@coolant. How to Add Coolant to the Coolant Recovery Tank If you haven't found a problem yet, but the coolant level isn't at or above theFULL COLD 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 Indexfor more information.) 5-18