Oldsmobile 1997 Aurora Owner's Manual page 272

Then, without shutting
off
the engine, follow
these steps:
1. Pull out the dipstick and
wipe it with a clean rag
or paper towel.
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 in the acceptable range, push the
dipstick back in all the way.