Hello all first post here so bear with me. I'm currently looking at purchasing a 2011 2500 silverado w/61000 mi on the clock. I have searched the forums here and can't find anybody that has much to say about the lml, good or bad, I understand that overall driving style and maintenance is paramount in fuel economy and longevity but......... What's the real deal with these? I'm looking at long term ownership and love the silverados but I have reservations with all the emissions on the current duramax. Have personally driven the Lmm and was not too impressed with the economy. 1,040 mi from Helena Mt to Medora Nd I90 and I 94 average w 3 horse bumper pull 10.5 mpg. Pulled like a dream just no economy. Trailer w/1 horse didn't weigh over 6,000# ,empty maybe 15mpg. So is there anybody running lml's stock or with mods that will give me so information please?! Thank you for the great site and knowledge