New fillup at station with 20% price spread.

Coming back from a nordic ski outing just south of Rhinelander, WI I stopped at the Trigs Shell station and was presented with a surprise; 20% price spread. E85 was $2.24 while E10 was $2.79. I promptly filled 1.72 gallons of E85 to 5 gallons of E10 and my vehicle now has a low 20% ethanol blend in it. I averaged 29.8 mpg on the 39 mile trip to the family house. I had averaged 27.7 mpg on the previous tank of fuel.