1994 Pontiac Trans Sport Owner's Manual - Page 222

To Add Coolant If you need more coolant, add the proper mix at the coolant recovery tank. Radiator Pressure Cap NOTICE: Your radiator cap is a 15 psi ( 105 kPa) pressure-type cap and must bc; 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. 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 again and look at the fluid level on 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 the "FULL COLD'' mark. Thermostat Add coolant mix at the recovery tank, but 5e careful not to spill it. Engine coolant temperature is controlled by a thermostat in the engine coolant system. The thermostat stops the flow of soolant through the radiator until the soolant reaches a preset temperature. When you replace your thermostat, an 4C' thermostat is recommended. 221 ...