Yesterday, I drove my Mark over 560 miles to Birmingham, AL from Wilmington, NC. It averaged 27.6 mpg. A lot of the interstate highway was posted 70mph and I was driving 78 to 80 mph. The engine appeared to be running a little cooler since the addition of the tranny cooler. The temp indicator was at the lower end of the L. I haven't fixed the cruise control so it may have been slightly different with the cruise working.
