1994 Cadillac DeVille Owner's Manual - Page 280

I NOTICE: Too much or too little fluid can damage your transaxle. Too much can mean that some of the fluid could come out and fall on hot engine partsor exhaust system, startinga fire. Be sure to get an accurate reading if you check your transaxle fluid. Wait at least 30 minutes beforechecking the transaxle fluid levelif you have been driving: 0 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. To get the right reading, the fluid should be atnormal operating temperature, which is 180" F to 200 " F (82 C to 93 C). Get thevehicle warmed up by driving about 15 miles (24 km) when outside temperatures areabove 50 F (10 C). If it's colder than 50 F (10 " C), you may haveto drive longer. To check thefluid level Park your vehicle on a level place. With the parking brake applied, place the shift lever in "P" (Park). 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 to five minutes.