I could never get over 11MPG with my 91 RC. it had the LA 318 with throttle body. It was aneemic. It also had 727 OD, and part time 4WD.
Like I mentioned it will soon be a cummins diesel RC. More power, better milage.
Never could figure out why Chrysler didn't put a Cummins into them, they did in the pickups.
Dave
