1993 Oldsmobile Achieva Owner's Manual - Page 236

Sewice & Appearance Care I Adding Coolant (CONT) Suge Tank Pressure Cap Your pressure capis an 18 psi (124 kPa) pressure-type capand must be tightly installed to prevent coolant loss and possible engine damage from overheating. When you replace your surge tank pressure cap, a GM cap is recommended. Thermostat Engine coolant temperature is controlled by a thermostat in the engine coolant system. The thermostat stops theflow of coolant through the radiator until the coolant reaches a preset temperature. When you replace your thermostat, an AC@thermostat is recommended. 1 You can be burned if you spill 1coolant an 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. I 234