1998 Cadillac DeVille Owner's Manual - Page 305
1998 Cadillac DeVille Manual
Page 305 highlights
Automatic Transaxle Fluid When to Check and Change Operating the engine with the cleaner off can air cause you or others to be burned, The cleaner air not only cleans the air,stops flame the engine it if backfires. If it isn't there,and the engine backfires, you could beburned, Don't drive with it off, and be careful working on the engine with the air cleaner off. A good time to check your automatic transaxle fluid level is when the engine oil changed. is Change both the fluid and filter every 50,000 miles (83 000 km) if the vehicleis mainly driven under one or more these conditions: of 0 In heavy city traffic wherethe outside temperature regularly reaches 90°F (32°C) or higher. In hilly or mountainous terrain. When doing frequent trailer towing. Uses such as found in taxi, police or delivery service. Use such as limousine service. 0 0 NOTICE: If the air cleaner is off, a backfke can cause a damaging engine fire. And, can easily get dirt into your engine, which will damage it. Always have the air cleaner in place when you're driving. 0 0 If you do not use your vehicle under any of these conditions, the fluid and filter not require change do until the message CHANGE TRANS FLUID appears on the Driver Information Center. See "Scheduled Maintenance Services" in the Maintenance Schedule booklet. 6-18