2004 Cadillac XLR Owner's Manual - Page 246

Checking Coolant The engine coolant surge tank is located toward the rear of the engine compartment on the driver's side of the vehicle. For more information on location, see Engine Compartment Overview on page 5-12. The vehicle must be on a level surface. When your engine is cold, the coolant level should be at the FULL COLD mark, located on the side of the surge tank that faces the front. If the LOW COOLANT message on the Driver Information Center (DIC) comes on and stays on, it means you're low on engine coolant. For more information see DIC Warnings and Messages on page 3-59. Adding Coolant If you need more coolant, add the proper DEX-COOL® coolant mixture at the surge tank, but only when the engine is cool. {CAUTION: Turning 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. Never turn the surge tank pressure cap - even a little - when the engine and radiator are hot. {CAUTION: 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. Do not spill coolant on a hot engine. When replacing the pressure cap, press down and turn it clockwise (right) until you hear a clicking sound. Make sure you fully install the cap. 5-22