Originally Posted by okif150

Oh man another MPG thread. Here's the deal. Your truck gets what the window sticker says when you buy it. If you change anything it gets less. Really that simple.

Originally Posted by Blue_76

There must be something wrong with my driving style...

Originally Posted by sullyman

Jonbar, you have the exact tires and wheels I plan to put on my truck after I level it.

I too live in San Antonio too, well just outside up I-10, where it's good and hilly and the roads wind around a bit.

Currently all stock 2012 4x4 SCrew with 3.55's on 17 inch Michelin ATs.

Here's my mileage report to date:

1st tank - 87 Octane - 17 MPGs - Tank provided by dealer
2nd tank - 87 Octane - 18.8 MPGs - All HWY to the coast and back in strong winds, lots of hills
3rd tank - 87 Octane - 17.2 MPGs - All city to work and back
4th tank - 93 Octane - 20.1 MPGs - All city to work and back
5th tank - E85 Corn - 13.0 MPGs - Gone a little over 1/2 tank with this

This truck runs great and strong on 87. Gets good mileage, especially on the highway, and good power.



On 93 Octane, there is a slight increase in power and throttle respone, not huge, but noticeable. Huge increase in MPGs!!!

• 8.5% increase in cost ($3.80 versus $3.50 for 87 Octane)
• 17.5% increase in MPGs
• 9% Net savings by using 93 Octane

On E85, this engine wakes up. Good lord, there is a huge increase in power and throttle repsonse is awesome, plus this truck just growls on E85 when you give it some throttle. Under WOT, it feels like an entirely different truck!!!

Mileage way down, but power way up on ethanol. I figure without flooring it (which is hard to do with the added power on tap) it would likely get around 15. I haven't done a timed 0-60 run, but it will certainly be a quicker time. I have also been playing in the mud some, which kills the mileage, but hey, that's part of why I have a truck.

Just wish I could find more mud on this end of town....