1993 Chevrolet Lumina Owner's Manual - Page 216

Service & Appearance Care Radiator Pressure Cap Your radiator cap isa 15 psi (105 Wa) pressure-type capand must be tightly installed prevent to coolant loss and possible engine damage from overheating. Be su the arrows onthe cap lineup wi the overflow tube on the radiato filler neck. When you replace your radiator pressure cap,an AC@cap is recommended. Thermostat Engine coolanttemperature is controlled by a thermostat in the engine coolant system. Thethermostat stops the flow of coolant through the radiator until the coolant reachesa preset temperature. When you replace your thermostat, an AC@thermostat is recommended. Power Steering Fluid How To Check PowerSteering Fluid: Unscrew the cap and wipe dipstick the with a clean rag. Replace cap and the completely tighten it. Then removethe cap again and look thefluid levelon at the dipstick. When the engine compartmentis hot, the level should beat the H mark. When the engine compartmentis cool, the level should be at the C mark. 214