2007 Suzuki Reno Owner's Manual - Page 157

SERVICE AND APPEARANCE CARE WARNING 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 60/ 40 mixture of clean, drinkable water and the proper coolant. CAUTION 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. Checking Coolant WARNING Never turn the surge tank pressure cap - even a little - when the engine and radiator are hot. Loosening the surge tank pressure cap when the engine and radiator are hot can allow steam and scalding liquids to blow out and burn you badly. The vehicle must be on a level surface. When your engine is cold, the coolant level should be between MAX and MIN mark on the coolant surge tank. The level rises at engine operation temperature and drops again when the engine cools down. Adding Coolant If the level falls below the MIN mark, add the proper coolant mixture at the surge tank, but only when the engine is cool. If the surge tank is empty, a special fill procedure is necessary. See "Cooling System" in this section for instructions on "How to Add Coolant to the Coolant Surge Tank". CAUTION If you use an improper coolant mixture, your engine could overheat and be badly damaged. The repair cost wouldn't be covered by your warranty. Too much water in the mixture 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 SUZUKI dealer check your cooling system. The engine coolant surge tank is located on the driver's side of the engine compartment. See "Engine Compartment Overview" in this section for more information on location. WARNING Don't spill coolant on a hot engine. You can be burned if you spill coolant on hot engine parts. Coolant contains ethylene glycol, and it will burn if the engine parts are hot enough. 5-13