mud slut, IIRC, it takes approx. 60,000 miles for these engines to reach optimum compression.
My m/t is about 39mpg for the life; however, the last 2 tanks have been a bit better than that. On my old tdi's, I hit break-in spots around 5000, 7500, and 12,000 ~ 15,000 miles. On my new tdi, my...