Quote:
Originally Posted by Happy
Well... It appears for now, the station is topping out at 75% ethanol. The max posted on the pump is 83%, however the highest we’ve seen was in the upper 80’s. Maybe lower content during winter months. 
I still can’t believe that E53 is running the same fuel as an Indy race car.  |
If set up for it you can run E85 in most stock engines but it's not a one size fits all.
The federal specs for E85 fuel is a minimum of 70% ethanol. It varies by time of year and state. E85 is a generic term not a federally fixed standard. Individual sources for ethanol can also differ, even in a small area it can be 10% or more. General rule is that the ethanol content is lower in the winter and increases in the summer. Some change the content 3-4 times a year depending on where you live.
Race only cars that use ethanol have the capability to adjust the amount of fuel to match the ethanol variation or for temperature/humidity. The same is true of their fuel delivery systems and ignition systems. Due to the cost it is rare that is the case of a street racer.
Even though almost any engine can run E85 if other changes are made it is certainly not necessary or effective or a cost saving for most.