"E65" is an easy in-the-tank blend of 2 gallons E85 per 1 gallon E10.
P.S. PLUS we have blender pumps where several strengths can be selected at the pump.
I've found no significant fe difference between E10 and 50/50 E10/E85 (which would be about E48) but above that strength fe does start to taper off BUT not in a ratio linear with the energy content of the fuel.
Last edited by Frank Lee; 07-23-2012 at 04:14 PM..
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