Oldsmobile cutlass supreme 1996 Owner's Manual page 212

4. Raise the vehicle by turning the jack handle
clockwise. Raise the vehicle far enough off the
ground for the spare tire to fit under the vehicle.
5. Remove all wheel nuts and take off the flat tire.
6. Remove any rust or
dirt
from the wheel
bolts,
mounting surfaces and
spare wheel.
J
Rust or dirt on the wheel, or on the parts to
which it is fastened, can make the wheel nuts
become loose after a time. The wheel could come
off and cause an accident. When you change a
wheel, remove any rust or dirt from the places
where the wheel attaches to the vehicle. In an
emergency, you can use a cloth or a paper towel
to do this; but be sure to use a scraper or wire
brush later, if you need to, to get all the rust or
dirt off.