Tank #10

I filled up at Meijer this morning. Here are the stats:

Price E85: $3.52 a gallon
Price 87 Octane gas: $4.02 a gallon

Gallons E85: 5.562
Gallons 87 Octane: 8.725
Gallons left from tank #9 (@~34.102% ethanol): 2.113

I'm assuming that the E85 is 75% ethanol, 100 octane.

Ethanol content of tank #10: 35.1521683%
Octane of tank #10: 92.005

Tank 9 finished with a mileage of 25.5. Average speed was 34 mph.

At 35% ethanol, this tank is very close to an ethanol content that caused the CEL to light.