Thraxbert
Well-Known Member
A correction in the Ethanol section>
You might hear of E30, E40, E50 all the way up to E85. Those numbers indicate octane content, and how much pump gas is mixed in with the E85 or ethanol.
This is unclear or potentially misleading. The Exx notation only indicates the ethanol percentage of the fluid by volume. The octane is different. Most sources place E85 at 105 octane (using United States AKI definition of octane). Mix with 93 at E10, you get: E30 = 96.2 octane, E40 = ~98, E50 = 99 octane, E60 = 101 octane and so on.
You might hear of E30, E40, E50 all the way up to E85. Those numbers indicate octane content, and how much pump gas is mixed in with the E85 or ethanol.
This is unclear or potentially misleading. The Exx notation only indicates the ethanol percentage of the fluid by volume. The octane is different. Most sources place E85 at 105 octane (using United States AKI definition of octane). Mix with 93 at E10, you get: E30 = 96.2 octane, E40 = ~98, E50 = 99 octane, E60 = 101 octane and so on.
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