Mile 20,634: I got a chance to take the JK through some snow up to 2 feet deep. Plowing through drifts is a blast in high-range First gear at about 4,000 rpm. Once again, the 4:1 low-range was pretty much worthless, meaning I couldn't use the lockers either,although I did use low-range Second gear to pull out a stuckSuburban. It doesn't matter; the rear locker is still broken anyway.I'll be taking it in to get that fixed real soon. The good news is, the engineers tell me I can simply bolt in the standard NV241 and all the electrical plugs should fit right up. The lockers will be way more useful to me combined with standard 2.72 low-range in mud, sand, and snow.
In the first 4,200 miles, we figured out that the mpg gauge in our Wrangler Rubicon was generous by about 2 mpg. After a total of nearly 21,000 miles, it was still inaccurate by about 2 mpg. So we calculated it to get correct numbers: Our actual average fuel economy, including highway, city, and off-road, was 15.9 mpg. Our best tank netted us 18.2 mpg on a long stretch of flat highway. Our worst tank was 6.6 mpg. This was what resulted while snow wheeling with the 3.8L at 4,000 rpm most of the day. It's totally possible to get better numbers, but these are realistic for a fairly aggressive driver. If you're looking for the best fuel mileage from your Rubicon's factory 4.10 gears and 32-inch tires, keep it below 65 mph on the highway.