True Grayson, but it runs like a scalded dog, even with 8k attached.

Ah yes Jimmy, good point. That trip was almost all at 75 - 80 MPH on the way back. I was rarely below 75 MPH for any length of time. It's also pretty hilly out there which doesn't help. There was even a little stop and go through Fredricksburg and Austin. Overall, the trip averaged 61 MPH and I think 12ish MPG (but I really don't remember). That was there and back. I'm only getting 18 or so on the highway right now. This is all according to the computer. I haven't bothered to calculate it by hand. I have changed from the 245 stock tires to 285s also.

Doug, my Dad (who is on his 2nd Cummins) said the same thing, that it's not even broken in yet. He said that he got everything from 13 - 26 MPG on his 1st Cummins. It was a 1 ton single wheel regular cab 4x4. That old boxy style, before the semi look. He said that it had a really high rearend in it and that's why it did so well. On his current 1 ton, he gets about what I'm getting with any decent load. He drives slower than I do.

With it broken in, the computer corrected, and a lighter foot. I'm hoping to get more in the future. We'll see.
~dso