NREL review of E15 effects on MY2001 and later cars finds no meaningful differences with E10
Green Car Congress
OCTOBER 13, 2013
The study does not address engines that EPA has not approved for use with E15, such as pre-2001 cars, marine, snowmobile, motorcycle, and small non-road engines. The data presented in these studies did not show any evidence of deterioration in engine durability or maintenance issues for E15 (or E20) in comparison to E0 and E10 (when tested).
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