I just got my Pyrex 100ml graduated mixing cylinder in the mail.
( Tol. +/- 0.6mL )
I am going to be testing the "fuel" blends in MN, IA, NE, CO, WY, KS very soon ( and other states as I have a need to be there.... ). Of course what I find in MN wouldn't apply to San Diego... but if MN has 85% ethanol in their E85 in the dead of winter ( -20'F ) then it would be more likely that the E70 is not required for winter in the rest of the U.S.

Check back here often.
I should have my first test done later today.
The only thing I will be able to measure is the gasoline/ethanol proportions. I will have no clue to the actual "quality" or btu content, or anything like that. -John