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Rich, that's great news !!
With our F250 V-10, I was pushing 13 mpg not towing and 11 towing - our TT is lighter than the 5ers but probably not as aerodynamic. Then it all went to H**l ! All of a sudden I couldn't get 10 !!! I figured I had a sensor or computer problem, looked at filters and plugs. Then I happened to ask a friend who had just put some new tires on his Suburban just like I had put on - all terrain BF Goodriches. Apparantly this "aggressive" tread just killed our efficiency. I never realized that could happen, but I couldn't find any other reason.
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