This may be able to answer why you should not pull a trailer with E-85 gas. The vehicles that are designed for flex-fuel can burn E-85 gas but the energy content is not their when extreme work is required. See the cart where you need to burn x amount of E-85 to equal gas.
--------------------------Gasoline Gallon Equivalents
Fuel Type----------Unit of Measure-----BTUs/Unit--------Gallon Equivalent
Gasoline (regular)------ gallon------------114,100------------1.00 gallon
Diesel #2-------------- gallon------------129,500------------0.88 gallons
Biodiesel (B100)-------- gallon------------118,300------------0.96 gallons
Biodiesel (B20)----------gallon------------127,250------------0.90 gallons
Compressed Natural-----cubic foot-------- 900---------------126.67 cu. ft.
Gas (CNG)
Liquid Natural Gas-------gallon------------75,000------------1.52 gallons
(LNG)
Propane (LPG)-----------gallon------------84,300-----------1.35 gallons
Ethanol (E100)-----------gallon-----------76,100------------1.50 gallons
Ethanol (E85)------------gallon-----------81,800------------1.39 gallons
Methanol (M100)---------gallon-----------56,800------------2.01 gallons
Methanol (M85)----------gallon-----------65,400------------1.74 gallons
This chart is from an article on E-85 fuel and why it is not a good use of ethanol.
Jim W.
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Jim & Jill
2010 318SAB Cougar
2008 Dodge 6.7LCummins the original 6.7L engine, w/68RFE Auto
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