Thread: E85 vs E30. Just a curious Joe asking away
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Old 07-06-2019, 09:26 AM   #5
NoHaveMSG
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E85 means 85% Ethanol
E30 is 30%

Ethanol is more knock resistant. It has less BTU's then gas by volume but burns at a much richer stoichiometric ratio. It is also excellent at pulling heat out of the system due to the richer fuel/air ratio.
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