Chevy and GMC Duramax Diesel Forum banner
  • Hey Everyone! Enter your ride HERE to be a part of this months Ride of the Month Challenge!

fuel mileage lbz

  1. 06-07 LBZ & LLY Performance Parts Discussion
    I have a 2001 duramax with a lbz swap and im getting 500 kms to a tank,my friend works for gm and he put it on there code reader and he said there was some egr codes but they werent throwing the engine light could this be the reason for poor mileage?the truck is stock.
  2. 911 Problems Forum
    I have a 06 3500 6.6 duramax with 17,000 miles. At 15,000 the dealer replaced the turbo. Since it gets 11 mpg. It got 19 to 20 before, unloaded. We have taken it back to the dealer and they say nothing is wrong with it. Does anyone have any suggestions on what to look for? I think there in a...
  3. 911 Problems Forum
    I am only getting 11-12.5 mpg around town whether I am pulling my work trailer or driving with out it. I am driving really easy and even this past weekend I took a trip up to the lake and only averaged 12-13 mpg. Anyone have any suggestions on why my mileage is is so poor if I am driving easy...
  4. 07.5-10 LMM Duramax Powertrain
    I just got my truck got a tuner putting the 4' magnaflow exhaust on tonight what should i be getting. the tires arnt stock but not large 285/75/16 just wondering what everyone else is getting. I eventually would like to run 35' tires with a 6' lift later also if you have setups like that...
  5. Alternative Fuels Diesel Additives Lubricants
    I mainly use my 2007 LBZ old body style 2500 to pull my 6000#+ toy hauler. without the trailer i can get 18-19 on the hwy with the K&N air cleaner and using the gray bottle diesel kleen which i am happy with. when i load the toy hauler the mileage drops to 8-9 mpg. i have stock tires and i also...
  6. Mpg

    Alternative Fuels Diesel Additives Lubricants
    i have a 06 lbz and i was wondering a good way to up my mpgs thanks
  7. Alternative Fuels Diesel Additives Lubricants
    Is there MPG benefits to running synthetic oil or even something like lucas oil stabilizer?
  8. Alternative Fuels Diesel Additives Lubricants
    has anyone else experience lower mpg since ulsd ? plus i'm adding RBP high performance additive. i used to get 14+ towing my horse trailer...now i'm getting about 12.5.
Top