1996 Oldsmobile Aurora Owner's Manual - Page 277
1996 Oldsmobile Aurora Manual
Page 277 highlights
Vehicle Storage If you're not going to drive your vehicle for 25 days or more, take off the black, negative (-) cable from the battery. This will help keep your battery from running down. I' To be sure the vent hose (A) is properly attached, the vent hose connectors (B) must be securely reattached to the vent outlets (C) on each side of the battery, and the vent assembly grommet (D) must be secured to the floor pan (E). Batteries have acid that can burn you and gas that can explode. You can be badly hurt if you aren't careful. See "Jump Starting'' in the Index for tips on working around a battery without getting hurt. Contact your retailer to learn how prepare your to vehicle for longer storage periods. Also, for your audio system, see "Theft-Deterrent Feature" in the Index.