I was flipping through my owners manual today and ran across an intresting statment. Apparently your supposed to take your truck in for repair if it "smokes excessivly". Boy, if they could only see most of the trucks on this site. (dang smilies aren't working)

 

Depends on your definition of "excessively", now doesn't it? I, for one, have never seen a Cummins that I thought smoked excessively. ;D