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ethanol and effects on engine...
- Thread starter moono
- Start date
Every Esso I've been to in the last couple seasons has had the 10% sticker on the 91 pump. Not sure why it's on there as pure but maybe it varies? I dunno
In my old bikes I try and avoid ethanol. They were not designed for it. If I know i am burning the tank that day, I put in whatever is handy, if I know its going to sit, then shell 91.
In my new bike (2013 Fazer 8 ), I run 87 from any name brand station. Its a new bike, its designed for up to 10% ethanol and its also designed for 86 octane. No issues so far and I don't expect any. Using anything with higher octane is a waste of money.
In my new bike (2013 Fazer 8 ), I run 87 from any name brand station. Its a new bike, its designed for up to 10% ethanol and its also designed for 86 octane. No issues so far and I don't expect any. Using anything with higher octane is a waste of money.
Me too and a coworker said the same when I shared the pure-gas.org link with him. Can anyone confirm?
Ethanol can be really bad for old bikes. Some of the new reproduction rubber parts for old bikes, stuff like carb holders, diaphragms, etc. dissolve when exposed to even the limited amount of ethanol in regular fuel. I've seen carb holders fail within a week or two of installation. Some of that was due to cheap reproduction parts, but for a lot of older bikes that may be all that is available now.
Esso is not being straightforward in any of its communications. Looks as though they think it's a non-issue, or they just don't have a consistent policy across stations.
You gotta tell MM
Well we looked over the site more and now I see it's station-specific for most brands.
Probably the only ones. I think they started in 2007 on the 600rr.....not sure why since it only needs 87
HD and BMW are both using knock detection on some of their engines for the last decade or so.
interesting.
so what other bikes have this issue as well other then ducati (plastic/fibreglass bladder tanks)...
well since you ask, KTM has a model or two with a bladder tank, Norton/CCM/Paton/a variety of vetter designs had glass tanks that did not like ethanol, amongst others.
It was (is) an enormous issue with power boats like S2, Hinkley, C&C and a myriad of others, they made huge formed in place tanks that were polyester resin product and the ethanol ate the tanks. In the 1990's the S5 had an in tank fuel pump that was glassed to the inside of the tank with polyester, the ethanol eats the resins and your pump floats around in the tank........ , Its a $1800 repair.
It was (is) an enormous issue with power boats like S2, Hinkley, C&C and a myriad of others, they made huge formed in place tanks that were polyester resin product and the ethanol ate the tanks. In the 1990's the S5 had an in tank fuel pump that was glassed to the inside of the tank with polyester, the ethanol eats the resins and your pump floats around in the tank........ , Its a $1800 repair.
As I previously mentioned; KTM uses plastic which is why I have to be careful with my Superduke.
I've never suffered from any of these ethanol carb stories. Ridden several different zx9's in the past few years-more than 100,000kms. Current bike doesn't seem to care either. It might be a bigger deal if the bike sits for extended periods like 6-12 months, but short term I don't see the harm.
I contacted McDougall(sp?) up here and they stated over the phone that all 3 grades may contain up to 10% ethanol. Maybe a supplier specific thing?
Not necessarily, it depends on the fuel map you have and the minimum recommended grade. My bike needs at least 89 PON, I choose to run 91 cause I don't like the idea of ethanol in gas period. It does give a negligible gain in horsepower and runs marginally smoother though (91 vs 89).
Mukala
Well-known member
Just find a shell. Their premium is ethonol free.
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