Ethanol or not
100 octane is better than ethanol diluted gas.
The following link won't help the OP, but it may be useful for those in the US and Canada.
http://www.pure-gas.org/
The following link won't help the OP, but it may be useful for those in the US and Canada.
http://www.pure-gas.org/
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,537
Likes: 6,412
From: Honah Lee
Not all Harley have same compression and lot depends on how hard you drive them. However 10% ethanol will not hurt it. Been using it in everything for years in my area. Ran a restored 69 Firebird 100K on it. Do all my own work on everything. mowers and weedeaters are 15-20+ years old. Drive my Harley easy. Actually runs better on mid-grade and gets a slight improvement in fuel mileage. I fill every 100 miles since I use my bike for work with similar 20 mile trips and know what it does. Using too high a octane gas is like shooting a 22 in a pistol as compared to a rifle You are going too loose some power if its too high
Last edited by Jackie Paper; Oct 12, 2011 at 07:48 AM.
100% absolute truth. There is less btu's in ethanol compared to gasoline. No possible way in a conventional motor as we know them can ethanol get better mileage than gasoline.
You will get better mileage from the 90 octane than the 93. If the cost is the same or even slightly more for pure gas it would be more cost effective to use the pure gas because the bump in mileage will negate the cost unless it's like a buck more a gallon then there won't be any savings
Ultimate HDF Member
Joined: May 2008
Posts: 6,642
Likes: 48
From: Ogden, UT
Hmm, never thought to check out our mid-grade around here, will have to give that a look and find out. Thanks for the tip.
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From: Flatlander
Outstanding HDF Member
Joined: Aug 2009
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From: NC
Can I run the mid grade ethanol free in my truck that says it requires premium? I would really rather run ethanol free in it as well, and cant get it in premium locally. I thought the ethanol actually added octane points to the fuel is why I ask.