1994 Oldsmobile 88 Owner's Manual - Page 204

Service &Appearance Care I Radiator Pressure Cap NOTICE: Your radiator cap is a 15 psi (10.5 kPa) pressure-type cap and must be tightly installed to prevent coolant loss and possible engine damage from overheating. Be sure the arrows on the cap line up with the overflow tube on the radiator filler neck. When you replace your radiator pressure cap, an AC@cap is recommended. I Power Steering Fluid How To Check Power Steering Fluid Unscrew the cap and wipe the dipstick with a clean rag. Replace the cap and completely tighten it. Then remove the cap againand look at the fluid levelon the dipstick. When the engine compartment is hot, the level should be at the HOT mark. When the engine compartment is cool, the level should be at theFULL COLD mark. Add coolant mix at therecovery tank, but be careful not to spill it. I Thermostat Engine coolant temperature is controlled by a thermostat in the engine coolant system. Thethermostat stops the flow of coolant through the radiator until the coolant reaches a preset temperature. When you replace yourthermostat, an A P thermostat is recommended. 202