2002 Chevrolet Impala Owner's Manual - Page 269
2002 Chevrolet Impala Manual
Page 269 highlights
How to Add Coolant to the Coolant Recovery Tank If you haven't found a problem yet, but the coolant level isn't at the COLD mark, add a 50/50 mixture of clean, drinkable water and DEX-COOLR engine coolant at the coolant recovery tank. See "Engine Coolant" in the Index for more information. NOTICE: In cold weather, water can freeze and crack the engine, radiator, heater core and other parts. Use the recommended coolant and the proper coolant mixture. CAUTION: Adding only plain water to your cooling system can be dangerous. Plain water, or some other liquid such as alcohol, can boil before the 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 too hot but you wouldn't get the overheat warning. Your engine could catch fire and you or others could be burned. Use a 50/50 mixture of clean, drinkable water and DEX-COOLR coolant. The coolant recovery tank is located in the rear of the engine compartment on the passenger's side of the vehicle. See "Engine Compartment Overview" in the Index for more information on location. 5-16
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