In my area, (ellenton, Fl.) we have 3 companies that have ethanol free fuel. Wawa, a new pilot and a Chevron. Chevron is also very proud of theirs. As a new Harley owner, I thought we were only supposed to use premium? In my Suzuki I used regular and when I used the pure gas I got about 15 mpg more.
ethanol free
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Jack Klarich
Guest
I run 89 ethanol free in my 07 Streetbob with NO problems
stray dog
Junior Member
Off topic but,
premium & regular are really misnomers.
lower octane=higher flash point (more flammable)
higher octane= lower flash point (less flammable)
The higher the compression in your motor the higher the octane gas you need to combat pre-ignition.
Now the more you rev your motor you are also advancing the timing compounding the threat of pre-ignition.
So if all you can get is 87 octane, it's probably not the best time to have a race with your buddies
gator508
Experienced Member
Off topic but,
premium & regular are really misnomers.
lower octane=higher flash point (more flammable)
higher octane= lower flash point (less flammable)
The higher the compression in your motor the higher the octane gas you need to combat pre-ignition.
Now the more you rev your motor you are also advancing the timing compounding the threat of pre-ignition.
So if all you can get is 87 octane, it's probably not the best time to have a race with your buddies
Good point stray dog, you know Harley recommends 91 octane minimum, so one doesn't want to use lower even if it's ethanol free.
I have found a station that is 93 octane pure and my bike runs great and
a wee bit cooler
stray dog
Junior Member
No.
The octane rating is the octane rating, it doesn't pertain to the blend of fuel.
I was off the ethanol topic before just adding some food for thought to Nikko's question.