Re: V-10 Horsepower

I have just over 57K and usually get between 10.5 and 11.5 mpg. using 87 octane. Even with a load of firewood, dirtbikes, towing a boat, it is usually between 10-11. I recently made a trip over to Spokane pulling my horse trailer. This thing weighs about 10K lbs. loaded. I pulled a eyeball popping 7.8 mpg on that trip. Unhooked the trailer and it was back to the 10-11. This is my motivation for seeking a solution. Jim, thanks for the links.