[Boostmonger]

I have a choice between 2 stations for E85. The E85 and gas prices are about the same at both. What is different is that one station gets much lower actual ethanol content. I am mixing to get E40 so it would just take more E85 to get the same mix.

Would mixing the stronger E85 fuel have any performance advantages or does it not make any difference?

[Dave @ BMS/Fuel-It!]

Originally Posted by Boostmonger

I have a choice between 2 stations for E85. The E85 and gas prices are about the same at both. What is different is that one station gets much lower actual ethanol content. I am mixing to get E40 so it would just take more E85 to get the same mix.

Would mixing the stronger E85 fuel have any performance advantages or does it not make any difference?

Lower ethanol content = needing to use more e85 to hit your mix.

Price being the same- id always use the higher ethanol content fuel personally, but big picture as long as your mix is accurate it doesn’t really matter imo

[hardparker]

E85 pump mixes usually use very low octane gas to fill out the non-ethanol portion of the fuel. Like 85 or 86 octane. You're definitely better off going with the higher ethanol content fuel and adding 91 or 93.

[AWSAWS]

Well from studies I saw the benefits of using E40 vs E60 vs E85 werent that great so I'd say just decide on what it's costing you. Use whichever is cheapest if the target is E40.

[LostMarine]

you cant go wrong witht the higher content e85. most stations get 85 by mixing with 87 anyway, so your worst case scenarios is you get to dilute with what you choose. secondly, the variance could be huge, so 1 station may have actual 85, or close to, and the other carrying 60 or 70 ish. for a few pennies per gallon, go with the higher stuff for safety and peace of mind