1993 Oldsmobile 88 Owner's Manual - Page 216

I Rust or dirt on the wheel,or on the parts which it is to 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 rustor dirt from the places where the wheel attaches to the vehicle.In an emergency, you can usea cloth or a paper towelto do this; but be sure to use a scraper wire brush or later, if you need to, to getall the rust or dirt off. 14. Remove any corrosion from the wheel bolts, mountingsurfice or spare wheel. 15. Place the spare tire on the mounting surface. 16. Replace the wheel nuts with the rounded endof the nuts towardthe wheel. Tighten each nutby hand until the wheel is held against the hub. I /r\ Never use oil or grease on studs or nuts. If you do, the nuts might come loose. Your wheel could fall off, causing a serious accident.