[airfidget]

All,

I'm inspired to get back on here and try another post.

I have purchased a wrecked, salvaged, and reconditioned 2013 Prius V that I am just having fun with, doing experiments, hypermiling, doing small modifications. 0 modifications to engine currently. Only weight reduction and drag reduction.

The past month I've been working with ethanol. Here are my results so far.

All tests performed at the same gas station, same pump, and run for 100 miles minimum to test if the MIL light came on. All mixes of E85 and regular are based off of the sticker concentration of ethanol, I know it can vary widely. All tests are done in town driving, no big hills, back and forth to work for my 6 mile commute. The Prius V is unmodified for ethanol. But it's all an experiment, and I'll never know if I don't try.

E10 regular 87, no MIL light, 49 mpg
E10 premium 91, no MIL light, 51 mpg
"E25" 2.07 gallons regular, 0.69 gallons E85, no MIL light, 48 mpg
"E50" 1.29 gallons regular, 1.46 gallons E85, no MIL light, 45 MPG
"E75" 0.69 gallons regular, 2.07 gallons E85, no MIL light, 45 MPG
E85, MIL light within 10 miles, 44 MPG

I am surprised at the noteably low difference between E10 and E85.

Thoughts?