1993 Buick Park Avenue Owner's Manual - Page 259

Wait at least 30 minutes before checking the transaxle fluid level if you have been driving: When outside temperatures are above 90°F (32 C). At high speed for quite a while. In heavy traffic -- especially in hot weather. 0 three secondsin each range. Then, position the shift lever in " P ' (Park). 0 Let the enginerun at idle for three to five minutes. Then, without shutting off the engine, follow these steps: While pulling a trailer. To get the right reading,the fluid should beat normal operating temperature, which is 180 F to 200 F (82OC to 93OC). Get the vehicle warmed up by driving about 15 miles 50 (24 km) when outside temperatures .are above F (10OC). If it's colder than 50°F (lO°C), you may have to drive longer. To check the fluid level: Park your vehicle on a level place. 0 Place the shift lever in " P ' (Park) with the parking brake applied. With your foot on the brake pedal, move the shift lever through each gear range, pausing for about 0 1. Pull out the dipstickand wipe it with a clean rag or paper towel.