I tow a small pop-up trailer (Aliner) that weighs about 1850lbs. In addition, we carry two 12 ft kayaks side by side on the X along with a "normal" amount of camping gear. The resulting mileage is 10.7 to 11.5 mpg when driving in 4th (overdrive off). The same set up on my 98 Cherokee XJ yielded about 14-15 mpg when driving in 3rd overdrive/lockup.
With the overdrive off, the X seems to have little or no lock-up with the revs climbing at any kind of slight hill. With overdrive on, the lock-up is quite solid but I follow the manual and keep overdrive off. The apparent lack of lock-up in 4th is troubling in terms of transmission slippage and possible overheating. The Cherokee exhibited a solid lock-up in 2nd, 3rd, or 4th gear. I was wondering if using 5th/overdrive on the X would help mileage and minimize transmission heating.
With the overdrive off, the X seems to have little or no lock-up with the revs climbing at any kind of slight hill. With overdrive on, the lock-up is quite solid but I follow the manual and keep overdrive off. The apparent lack of lock-up in 4th is troubling in terms of transmission slippage and possible overheating. The Cherokee exhibited a solid lock-up in 2nd, 3rd, or 4th gear. I was wondering if using 5th/overdrive on the X would help mileage and minimize transmission heating.