Well another 65 mile trip down, and I didn't get a higher number, but I did get around the same. 47.5 so a .4 drop. So I went back to the weather calendar and noticed that last week it was 20 degrees warmer than it was yesterday. I don't know how much that would play into it, but it might. I did get a good overall tank average at 33 mpg, which I think is due to the two trips of 65 miles averaging over 47 MPG. Even still this rig is only supposed to get 25 mpg combined/ 28 highway. So I think I'm doing a little something right. I'm going to keep trying to hit that magic number of 50. I was almost there when I did the first leg of the journey I hit the off ramp to take to get to my sons therapy at 49, but the city driving to it dropped it to 48 something when I parked. I might just bump the tire pressure a little more to see if I can get there.