6.7 Cummins Non DEF vs Newer DEF Trucks
Hi, I used to have a 2008 6.7 CTD 4x4 which towed great but the fuel economy sucked and I know many folks had issues with the first era of emmissions "bluetec" trucks. Last week I picked up a new 201...
Forum Discussion
Not to pick on anyone , but one engine maker said that if you drive a truck with one of their engines equipped with DEF thru downtown L.A. that the exhaust coming out is cleaner than the air going in
