I own 5 GMs. I have an 04 Cavalier with 112,000 miles that does not drop or burn any oil, gets 30mpg, and still runs like new. A guy I work with has a Cavalier with 250,000 miles on it with no maintenane issues. My wife has an 05 LaCrosse with over 50k on it with no probs yet and it looks and...