1993 Buick Regal Owner's Manual - Page 229

Then, without shutting off the engine, follow these steps: A 1. Pull out the dipstick and wipe it with a clean rag orpaper towel. 'i 2. Push it back in all the way, wait three seconds and then pull it back out again. 3. Check both sides of the dipstick, and read the lower level. The fluid level must be in the cross-hatched area. 4. If the fluid level is where it should be, push the dipstick back in all the way. How to Add Fluid: Refer to the Maintenance Schedule to determine what kind of transaxle fluid to use. See "Recommended Fluids and Lubricants'' in the Index.