New BULL / E85 Question - Taurus Car Club of America : Ford Taurus Forum
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post #1 of 4 (permalink) Old 08-02-2019, 09:15 AM Thread Starter
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New BULL / E85 Question

I just upgraded from a 2015 SEL to a 2013.5 SHO (pics up soon).

The gas cap says "no E20-E85" and there are no flex fuel markings on the car.

What would I need to replace on the car to get it to be able to run E85 without breaking anything? (other than my wallet?)
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post #2 of 4 (permalink) Old 08-02-2019, 03:23 PM
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You very likely cant. You would need the "fuel sensor" from a flex fuel Ford spliced into the fuel line that measures the % EtOH in the fuel via its dielectric constant and find a way to interface it with the SHO PCM, which would likely be very difficult to impossible to do. The DI fuel injectors may not be compatible with E85.

E85 is worthless anyway. Yes it is cheaper per gallon, but E85 has less energy content that straight gasoline or E10 resulting in a significant drop in fuel economy which makes it more expensive per mile to use E85 than E10 or straight gasoline. Combustion chamber design is somewhat different on flex fuel engines than E10 / straight gasoline engines also.

05 Taurus SEL Duratec - my daily driver
04 Taurus SES Duratec - wifes car - TOTALED
06 Taurus SE Vulcan - wifes new ride
95 Taurus GL Vulcan winter car
Toy #1 - 86 Tbird 5.0 (original owner) - LOTS of mods
Toy #2 - 88 Tbird Turbo Coupe - LOTS of mods
67 Honda 450 Super Sport - completely customized
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post #3 of 4 (permalink) Old 08-02-2019, 03:57 PM
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Quote:
Originally Posted by Jeff K View Post
You very likely cant. You would need the "fuel sensor" from a flex fuel Ford spliced into the fuel line that measures the % EtOH in the fuel via its dielectric constant and find a way to interface it with the SHO PCM, which would likely be very difficult to impossible to do. The DI fuel injectors may not be compatible with E85.

E85 is worthless anyway. Yes it is cheaper per gallon, but E85 has less energy content that straight gasoline or E10 resulting in a significant drop in fuel economy which makes it more expensive per mile to use E85 than E10 or straight gasoline. Combustion chamber design is somewhat different on flex fuel engines than E10 / straight gasoline engines also.
Unless you're running an Indy car. E85-E100 is great if the engine is actually designed for it.
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post #4 of 4 (permalink) Old 08-02-2019, 06:06 PM
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^^^^ Agreed

05 Taurus SEL Duratec - my daily driver
04 Taurus SES Duratec - wifes car - TOTALED
06 Taurus SE Vulcan - wifes new ride
95 Taurus GL Vulcan winter car
Toy #1 - 86 Tbird 5.0 (original owner) - LOTS of mods
Toy #2 - 88 Tbird Turbo Coupe - LOTS of mods
67 Honda 450 Super Sport - completely customized
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