As I put in the other thread I'm on two years and 55,000 miles with mine. No complaints, and I drove nothing but diesels since 93.
Down here in the humid country I average 13-13.5 day to day empty (F-350 SRW, 3.73 gears). Pure highway empty I can get between 14 and 15. When I travel to NM, CO etc it does a little better.
Light pulling (16' bumper pull lightly loaded or 2 horse bumper pull) I'll average 11 or so. Heavy loaded 20k gross and up I'll average around 8.5- 9. My last powerstroke only did marginally better than that.
Bill
