How's your maintenance schedule? How are the brakes? When's the last time you had the trans serviced? How about tires? Whats the wear pattern look like? Pressure? Font hubs in? Air filter ok? How about mods? Lifted? Big tires? How much do you idle? Do you turn it off when fueling? Keep the climate controls running for over three minutes when stopped?
All this stuff adds up.
I've noticed that with ULSD, I've dropped 1 m/g. Used to be a solid 18+, now its 17+. I've tracked every drop of fuel through the truck in a spreadsheet. Average lifetime fuel usage for 76+k miles, 16.9, including towing. Lowest ever 11.6, towing 7k#s at 70m/h. Highest ever 19.8. Longest tank (38g) 745. About 80% of my drivng is I-5 60 mile RT.
Milage / Economy is a head game / lifestyle, and you have to be willing to play.
OMC
OMC, thanks for the response, I will do my best to answer all questions fully. Let me know what I can/should be doing to increase my mpg.
My maintenance schedule is as follows.
Bought the truck used at 104,000 miles, is now at 111,729
-Changed oil at 107,000 miles
-Changed fuel filters at 107,000 miles
-Brakes have plenty of wear left
-Changed tires to 325/65/R18's Nitto Terra Grapplers, filled to 60PSI
-Front Hubs are set to auto lock
-I only idle at stop lights
-I turn truck off when fueling
-I have climate controls on when driving, but do not idle much so not at all there. Minimal A/C use
-Never had had trans flush done.
-Just changed air box, stock
Again please let me know all thoughts on this, thanks.