hey guys just got back from a trip in the mountains of pa with my jeep and hand calculated my mpg to be right around 12.5 / is that normal? mostly hiway with about 30 miles of backroad towing.its a ccsb on stock tuning.4inexhaust,lbz mp with 20in fuel wheels on 295s. the jeep and trailer id say probably weight just north of 5k.my whole point to posting this is because ive read things about guys who get 13 towing 12k pounds .