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Flavor 987S · 11-28-2012, 09:14 AM

The answer is 5%.

During your summer trip, 93 or 91 octane in your area was about 9-10% ethanol.

When you did the trip last week, the same gas is now closer to 4-5% ethanol.

That's my guess from testing fuel this past winter/spring and summer.

11-28-2012, 09:14 AM	#3
Flavor 987S Registered User Join Date: Jul 2009 Location: Arlington Heights, IL Posts: 1,561	The answer is 5%. During your summer trip, 93 or 91 octane in your area was about 9-10% ethanol. When you did the trip last week, the same gas is now closer to 4-5% ethanol. That's my guess from testing fuel this past winter/spring and summer.