1998 Oldsmobile 88 Owner's Manual - Page 322

Ignition Transaxle Lock Check While parked, and with parking brake set, try turn the to the ignition keyto LOCK in each shift lever position. The key should turn to LOCK only whenthe shift lever is inPARK (P). The key should comeout only in LOCK. Park on a fairly steep hill, with the vehicle facing downhill. Keeping your on the regular brake, set foot the parking brake. To check the parking brake's holding ability: With the engine running and transaxle NEUTRAL (N), in slowly removefoot pressure from the regular brake is pedal. Do this until the vehicle held bythe parking brake only. Parking Brake and Automatic Transaxle PARK (P) Mechanism Check I When you are doing this check, your vehicle could beginto move. You or others could be injured and property could be damaged. Make sure there is room in front of your vehiclein case it begins to roll. Be ready to apply theregular brake at once should the vehicle begin to move. To check the PARK (P) mechanism's holding ability: With the engine running, shift to PARK (P). Then release all brakes. Underbody Flushing Service At least every spring, use plain water to flush any corrosive materialsfrom the underbody. Takecare to clean thoroughly any areas where mud and other debris can collect. 7-33