2009 Cadillac XLR-V Owner's Manual - Page 344

Checking Coolant The vehicle must be on a level surface when checking the coolant level. When the engine is cold, the coolant level should be at or above the FULL COLD mark on the side of the coolant surge tank that faces the front. When the engine is hot, the level could be higher than the FULL COLD mark. If the coolant is below the FULL COLD mark when the engine is hot, there could be a leak in the cooling system. If the LOW COOLANT message on the Driver Information Center (DIC) comes on and stays on, it means the vehicle is low on engine coolant. See DIC Warnings and Messages on page 3-60. A low coolant level should be indicated by a LOW COOLANT message on the Driver Information Center (DIC). If it is, there could be a leak in the cooling system. The engine coolant surge tank is located toward the rear of the engine compartment on the driver side of the vehicle. For more information on location, see Engine Compartment Overview on page 6-12. Check to see if coolant is visible in the coolant surge tank. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down. If coolant is visible but the coolant level is not at or above the FULL COLD mark, add a 50/50 mixture of clean, drinkable water and DEX-COOL® coolant at the coolant surge tank, but be sure the cooling system is cool before this is done. How to Add Coolant to the Coolant Surge Tank { 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. 6-24