2002 Cadillac Eldorado Owner's Manual - Page 287

Adding Coolant If you need more coolant, add the proper DEX-COOLR coolant mixture at the surge tank, but only when the engine is cool. Surge Tank Pressure Cap The surge tank pressure cap is located on the surge tank in the engine compartment on the passenger's side of the vehicle. See "Engine Compartment Overview" in the Index for more information on location. 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. Don't spill coolant on a hot engine. When replacing the pressure cap, make sure the arrow lines up with the tube. NOTICE: The surge tank cap is a 18 psi (124 kPa) pressure-type cap and must be tightly installed to prevent coolant loss and possible engine damage from overheating. Be sure to the arrow on the cap lines up with the overflow hose. 6-27