Join Date: Apr 2013
Location: Central NH
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Check your tire pressure. You should be able to add a few psi without hurting tire life. Next, don't use cruise. I find I can keep it from downshifting most of the time. I have not tried cruise on flat roads; might be ok there. Finally, I think best mpg is around 50-55mph (edit: I originally said 60, but this morning I realized it would do 50-55 on the flats just fine in sixth). Preferably fast enough to sty in top gear without downshifting (I think it burns extra fuel every time it downshifts, momentarily, above and beyond what it would be if it was forced to downshift ahead of time).
Past that, the usual applies. Minimize idling, cold starts, etc. I like to coast to stops too. Will say it sucks gas on any hill. Lot of weight, regardless of motor. But you're in Texas, not sure that is an issue... This morning I played with it a bit, and I found that, yes, downshift it a gear on the hill doesn't cost that much, an mpg or two while climbing, and it is more responsive. But the lowest gear possible does still yield the best mpg.
When I first got mine I got similar mpg. It then went up. I had been forcing it to downshift on decel. I finally wound it out a few times, and just used drive. And put 36 psi in the tires. Oh, and a tonno cover. Big results. I think it may have wanted the Italian tuneup, and occasional rpm pull won't cost that much. Unfortunately I kinda did all those things at once so I don't know which had what impact. My turbo-diesel runs so much better after being wound out, but these gassers are different--or are they? Burn any deposits off, blow out the carbon... I dunno.
What kind of driving do you do? Do you have the tow package? Flat ground, no tow should get the best mpg. Also, you have a 2013; does it have the mpg readout? I have a Scangauge in mine, and have it set to watch both instantaneous and avg (for the tank) mpg. It shows you real quick what hurts the most. I'd add one or the other, it's an eye opener.
2010 Double Cab, 4.6L, 4x4, tow, Brillant White, 108kmiles
2011 Camry, 2.5L 6spd manual, 105k
Last edited by supton; 08-15-2013 at 08:52 AM.
Reason: need more caffeine before posting