Quote:
Originally Posted by The Ghost
Thank you for the pictures, those trunk emblems were incredibly insightful.
Seriously, my question is really searching for understanding. Do we know what is different about their fuel systems, such as tank fluid separators, tank vent check valves, etc.? No speculation please.
FWIW some other, non-"flex fuel" platforms run e85 year-round.
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The 2 main differences that allow OEM flexfuel vehicles to run E85 year round is the winter blend, as others have stated, and the built-in tuning compensation which is based on the flex fuel sensor. From what I've seen using E85 in 2 of my cars is that it needs different compensation for engine temp and air temp (which is closely related to fuel temp) since the density of the fuel is different and the atomisation characteristics change more drastically than gasoline at different temps.