1998 Oldsmobile 88 Owner's Manual - Page 253

Thermostat Engine coolant temperature controlled by a thermostat is in the engine coolant system. thermostat stops the The flow of coolant throughthe radiator until the coolant reaches a preset temperature. When to Check Power Steering Fluid It is not necessary to regularly check power steering is fluid unless you suspect there a leakin the systemor you hear an unusual noise. A fluid lossthis system in could indicate a problem. Have system inspected the and repaired. Power SteeringFluid How To Check Power SteeringFluid When the engine compartment is cool, wipe the cap of the and the top the reservoir clean, then unscrew cap and wipe the dipstick with a clean rag. Replace the cap and completely tighten it. Then remove the cap again and look at fluid level on the dipstick. the COLD mark. If The level should be at the FULL necessary, add only enough fluid to bring the level up to the mark. What to Use To determine what kind fluid to use, see of "Recommended Fluids and Lubricants" in the Index. Always use the proper fluid. Failure to use the proper fluid can cause leaks and damage hoses and seals. The power steering fluid reservoir located on the rear is passenger side of the engine compartment. 6-24