Well my wife is on the road alot as a social worker and her 2007 Pontiac Vibe has about 105,000 all highway miles on it. It has the Toyota 4 cyl engine in it, so I know it will last forever. At 80,000 I did all the major maintenance on it. Its not using any oil nor does it have any leaks. I was curious about putting a can of seamfoam in it to get rid of any carbon build up in the engine. Whats you guys experience with seamfoam. Does it work? I'd love for this little yota engine to last until 200,000 plus.