Bombsquad85
Full Access Member
I average 13mpg lol. In the 2 plus years I've had this truck I've never seen over 16.
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My old daily driver 2005 Tahoe would pull 19 to almost 21 pure highway,,,, my 2003 6.0 DD Denali,,,, not so much LOL
Now our new 6.2 RST will go 24-26 on the road.
Honestly I noticed it burns slower.Several bad reports here about Shell being a problem fuel.
hey i've got it down to 8.3 now, been having fun driving around in L3 and goosing it a lot.Drive on, Speed Racer, drive on.