I have a 2001, 2500 with only 27700 miles on it and just the other day it became sluggish when taking off from a stop. My first inclination was low transmission fluid. When I went to check it I noticed a bit of smoke in the lights. When I opened the hood I searched all over untill I looked at the crank case breather bottle and it was just coming out of the small holes in it. It had the nomal oil smell that Rotella has but is the smoke normal.