Octane content of the other 15% inside of e85?
Anybody know what the octane rating is for that other 15.0 or more percent of fuel that's inside of e85.
I'm wondering this since the only nearby gas station in my area has stated 51-83% ethanol content at their flex fuel pump. So basically I don't have access to any straight guaranteed "E85". But I'm trying to determine if it would still be beneficial for me to run the kind that they're offering. So for example, the other stuff that's inside of E85 that's not alcohol, is it gasoline? 87 octane?... 91? 93, 99 octane? - Can anybody answer this Anybody that has a more in depth understanding of the composition of E85 aka Flex Fuel, please feel free to share some insight. I have an organic chemistry background so don't be afraid to speak foreign language. Cheerz |
Odds are it's going to the cheapest gas they've got, so probably 87 if not 85.
--Ian |
Originally Posted by codrus
(Post 1489754)
Odds are it's going to the cheapest gas they've got, so probably 87 if not 85.
--Ian |
My guess is the same as Ian, 87 or 85.
Empirically, it does not matter. True E85 (70% or better) has the detonation resistance of ~116 octane gasoline. |
Originally Posted by Savington
(Post 1489761)
My guess is the same as Ian, 87 or 85.
Empirically, it does not matter. True E85 (70% or better) has the detonation resistance of ~116 octane gasoline. So perhaps it will be a good idea to run it anyway but have a flex fuel sensor. |
I was researching E85 for my 12:1 compression engine and found that you can't rely on pump E85 to be consistent or accurate. If you really want to use E85, you're best getting it by the barrel. Definitely integrate the flex fuel sensor if possible.
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Originally Posted by Diamond Dave
(Post 1489845)
I was researching E85 for my 12:1 compression engine and found that you can't rely on pump E85 to be consistent or accurate.
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Pearson here in nor-norcal is 70ish
Propel and Mobil are always 80+ I've observed a significant improvement over our CA91 with anything over 30% |
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