1994 Oldsmobile 88 Owner's Manual - Page 242

Maintenance Schedule Explanation of Scheduled Maintenance Services Following are explanations of the services listed in Schedule I and Schedule 11. The proper fluids and lubricants to u"s'e are listed in Section D. Make sure whoever services your vehicle uses these. All parts should be replaced and all necessary repairs done before you or anyone else drivesthe vehicle. ITEM SERVICE NO. 1. Engine Oil and Filter Change'? Always use SH or SG Energy Conserving I1 oiIs of proper viscosity. The "SH" or"SG" designation may be shown alone or in combination with others, such as "SH/CD" "SH, SG, CD," "SG/CD," etc. To determine the preferred viscosity for your vehicle'sengine (e.g., SAE 5W30 or SAE 10W-30), see Engine Oil in the Index. If your vehiclehas an Engine Oil-ChangeIndicator (EOCI), the indicator will show you when to change the oil, usuaIly between 3,000 miles (5 000 I a n ) and 7,500 miles 240 (12 500 l u n ) since your last oil change. Under severeconditions the indicator may come on before 3,000 miles (5 000 ltm). Never drive your vehicle more than 7,500 miles (12 500 ltm) or 12 months without an oil change. The system won'tdetect dust in the oil. So if you drive ina dusty area be sure to change your oil every3,000 miles (5 000 ltm) or sooner if the CHANGE OIL NOW message appears in the information center. Remember to reset the Oil Change Indicator when the oiI has been changed. For moreinformation, see Driver Information System in the Index. 2. Chassis Lubrication- Lubricate suspension and steering linkage. Lubricate the transaxle shift linkage, and parking brake cable guides, underbody contact points and linkage. 3. Tire andWheel Rotation and Inspection - For proper wear and maximum tire life, rotate your tires following the instructions in this manual. See Tires, InspectionG. Rotation in the Index. Check the tires for uneven wear or damage.If you see irregular or premature wear, check the wheel alignment. Checkfor damaged wheels also. 4. Engine Accessory Drive Belt Inspection '% Inspect the belt for cracks, fraying, wear and proper tension. Replace as needed. 5. Cooling SystemService': - Drain, flush and refill the system with new or approved recycled coolant conforming to GM Specification 1825M. Keep coolant at the proper mixture as specified. See Coolant in the Index. This provides proper freeze and boil protection, corrosion inhibitor level and maintains proper engine operating temperature. Inspect hoses and replace if they are cracked, swollen ordeteriorated. Tighten screw-type hoseclamps. Clean the outside of the radiator and air conditioning condenser. Washthe pressure cap and neck. To help ensure proper operation, we recommend a pressure testof both the cooling system and pressure cap. the