Z71crawford

Well to make you all feel better i get an average of 11.4 but i have a 5.3. Maybe a 6.0/6.2 swap sounds more economical now

brent1976

iTrader: (1)

In town mine is around 10 with the 3000 stall tcc. On the highway it gets 18+ if I stay around 70, but if I go faster(which I usually do) it goes down pretty quick from there.

cdub81

iTrader: (2)

Man all these 17, 18-22 MPG makes me jelly...

12-14 mixed cty/hwy. 2800 stall 275/60/17 tires 4:11 gear 70mph is about 2250-2300 rpm

asap216

i have no idea how some of yall are pulling numbers like that lol. the best i have seen out of my truck is 15.2 and i was dedicated in getting good numbers at the pump. so prolly around 60 mph for the entire trip

1FastBrick

iTrader: (17)

With the 5.3 , I get 12-14 city and average around 16-17 mixed with Highway. I can get 19-20 all highway depending on road conditions But I Need to drive around 80 MPH to achieve that. 2WD, 3:42 with 265/75/17 . 80 MPH is turning around 2000 RPM

Haven't spent enough time on the road with the LQ9 in the VHO but it seems like 12 around town and 17 Highway.

nickleahy23

iTrader: (1)

get a custom tune and that will go up..i never got better than 17 with the 5.3 and 24s with a tune, but the 6.0 definatly helped on highway mpg..i never kick down on hills and that helps a ton in my heavy *** truck..I would like to think same set up i could get 22 highway consistant in my rcsb when lowered

asap216

damn 2k rpm at at 80!?! Im turning that right above 60. but i got 3.73 with 245/75 16, 14 bolt and 4l80e. too bad im planning on going to 4.10's when i get a trutrack

asap216

im planning on it from nelson in san antonio and i got efans off of another truck so those two put together should me quite a bit

MikeGyver

iTrader: (5)

I can get close to 15 mpg highway with my setup. If it was the same numbers at the dragstrip, I would brag that I was deep in the 14s!

nonnieselman

iTrader: (10)

Ive never seen a 1500HD get good mileage..
dunno why?