Smoke After Shutoff

[94lex83457]

The other day i noticed that smoke (exhaust emissions) were still coming out of my tail pipes almost a full minute after i shut the car off. I am also buring a quart of oil in the course of three weeks (driving everyday.) I wonder if these two are connected, but i'm especailly worried about the exhaust. It's a '94 SC300 with 206,003 miles.

any help would be greatly appreciated.

[jzz30]

maybe the unburnt oil is getting on to your cat and is just cooking until the cat cools down?