1996 Buick Regal Owner's Manual - Page 215

6. Remove any rust or dirt from the wheel bolts, mounting surfaces and spare wheel. A CAUTION: I ~ 4. Raise the vehicle by turning the jack handle clockwise. Raise the vehicle far enough off the ground for the sparetire to fit under the vehicle. 5 . Remove all wheel nuts and take off the flat tire. Rust or dirt on the wheel, or on the partsto 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 dothis; but be sure touse a scraper orwire brush later, if you need to, to get all the rust or dirt off.