Somebody asked about non-ethanol fuel awhile back.
A banner advertising such has been spotted along highway US 321 about halfway between Hampton and Elizabethton. CLICK HERE
for a google map to the approximate area...about 7 1/2 miles from Party Central.
I did not test it so can't say anything about truth in advertising......also that may not be the exact station in the map...but it was spotted along that short stretch through Valley Forge.