1993 Buick Century Owner's Manual - Page 238

Automatic 'mansaxleFluid When to Check and Change: A good time t check your automatic transaxle fluid level o is when the engineoil is changed. Refer to the Maintenance Schedule to determine when to change your fluid. See "Scheduled Maintenance Services" in the Index. Wait at least 30 minutes before checking the transaxle fluid levelif 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. While pulling a trailer. How to Check: Because this operation can be a little difficult, you may choose to havethis done at a Buick dealership Service Department. To get the right reading, the fluid should be at normal operating temperature, which is 180°F to 200"F (82"C to 93°C). Get the vehicle warmed up driving about15 miles by (24 km) when outside temperatures are above 50°F (10°C). If it's colder than50"F (lO°C), you may have to drive longer. If you do it yourself, be sure follow all the instructions to here, or you could get a false reading on the dipstick. 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 three seconds in each range. Then, position the shift lever in "P" (Park). Let the engine run at idle for three five minutes. to 236