Hi all,
I have a 2005 Explorer XLT 4.0 V6 with 130,000 miles on it. I average about 12.5 mpg in town and 16.5 with cruise control on the freeway doing 60 mph. Besides marginally bigger tires and a k&n drop in filter, it is stock. I have read that cleaning the Mass Air Flow, the IAC, the o2...