I had the oil changed at 4042 miles at OC Jeep in Costa Mesa. Prices came down on the oil @$6.09/qt. and $39.60 for the filter; labor was $25.00. Then I headed to Moab, Utah - about 1800 miles total, including about 100 miles off pavement on some mild trails over 4 days. Overall mileage was 26.5 average including the off road portion. While on the trails I ran, the average was around 18 or so according the the VIC (yes, I've read the threads about VIC accuracy, and no, I didn't calculate it otherwise
This was on Bartlett Wash:
and esports16 and I at our lunch stop at the top of La Sal Pass:
Overall, it performed as a stock GC should, and as my '97 ZJ did when it was stock, with a couple of major exceptions. First, the airbag suspension in OR2 mode is very hard, making progress slower than I could do in the ZJ. It really pounded me, and made popping sounds all along the way. In OR1 which I used whenever I didn't need the extra inch of clearance, it was noticeably "softer" and therefore bearable.
Second, the IF and IR suspension doesn't have much travel, so I lifted front or rear tires several times on really mild rocks or ruts, but with the rear ELSD in "rock" mode it kept on going, so for the level of difficulty of those trails, it did fine. I probably could have taken a different line, but that wouldn't have been fun.
I used low range most of the time with the 3.0 and the drive by wire throttle - that made it much smoother to gradually accelerate & feather the throttle over rocks and ruts. Also, I didn't need to use the brakes as much, and with this one, there can't be any brake/throttle combo like in the ZJ (it apparently messes with the computer).
We had a couple of steep descents, one on rutted, powdery red dirt and the other on loose rocks. I was in low range and used the hill descent and paddle shifters, and had to give it throttle in 1st gear to keep moving; it would come to a stop if I took my foot off the accelerator - that feature really worked!
I aired down the GY Duratracs to around 25 lbs., which was enough for the trails I ran. They performed flawlessly on the road and off.
So, the Summit is fairly capable for mild off roading, but I did scrape the paint on one side of the lower fascia a couple of times
On Saturday, Esports15 with his Overland gasser tackled Dome Plateau, a medium difficulty trail:
Definitely makes it easier to do that with the removable lower panel. And after looking at his, I think I can modify mine to be removeable - at least I'm going to give it a try later this summer.
EDIT: the rock stacking was from Easter Jeep Safari.