My new to me tow pig has flex fuel option. Anyone else use E85? I filled it up with the stuff on Saturday and my instant MPG readout dropped 3 mpg within the first 10 miles, at a dollar or more per gallon less that doesn't really concern me. I would just like some of you guys biased opinions and maybe even some actual facts to support these opinions why I should continue or not to use this stuff. Will the increased octane/alcohol help when towing, possibly keep it cooler due to the increased fuel volume?