1998 Oldsmobile Aurora Owner's Manual - Page 270

Automatic Transaxle Fluid When to Check and Change A good time to check your automatic transaxle fluid level is when the engine oil is changed. How to Check Because this operation can be a littledifficult, you may choose to have this done at your Aurora retail facility Service Department. If you do it yourself, be sure to follow all the instructions here, or you could get a false reading on the dipstick. Change both the fluid and filter every 50,000 miles (83 000 km) if the vehicle is mainly driven under one or more of these conditions: In heavy city traffic where the 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. If you do not use your vehicle under any of these conditions, the fluid and filter donot require changing. See "Scheduled Maintenance Services'' inthe Index. 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 parts or exhaust system parts, startingfire. Be sureto a get an accurate reading if you check your transaxle fluid. 6-18