e85 comes out to be about the same price in mpg as 93 octane ( non marine gas pumps). It is race gas at pump gas price.

Another happy e85 in a car application. 352ci, 15psi 900hp. Engine has 6000 miles it, not one issue ever. Engine runs cooler, smoother and can't make it detonate if I tried lol.

Like stated mpg is 30-40% less. I could see that being a problem in a boat depending on how big the tank/s are and how far you drive.

If your engine normally requires $7/gal race gas and you run e-85 @ $2.85 and burn 30% more fuel, you are saving $3.30 a gallon! I will take that any day.

Been running E85 in a Procharged 615 for 2 seasons now, no problems to date. Idles a lot better, runs strong accross the board, clean transom, runs lower Egt's, love it.

Please tell me where I can buy$7/gal race gas lol. The last time I looked VP was $18 a gallon in a 5 gallon container.

You can pump 110 octane right into your boat at LOTO for $8.50 a gallon and Camden on the Lake.

Good point, I was thinking in terms of pump gas choices. That makes lots of sense in that context.

here is the problem with e85 at the pump,,its ocrane rating is wishy washy..its never consistent..because its blended at the gas station your getting it from one week it can be 105 octane and another week it can be 112 octane..if you were to but it from a fuel wholesaler like vp fuels its like 65 bucks for 115 octaine in a 5 gallon pail which makes it more expensive that running 112..

....Really ??? well if you figure what we are running boost wise with no intercooler...we would need to be using $10+ race fuel....so do the math now...

Yes this is true to a point. What can be noted is (since this was meant for strictly a performance base thread) is some actually test their race fuels for correct octane levels depending on how much you are into perfecting your current setup. Timing, plugs, plug gap, indexing plugs if some people do this. Etc.... I am ocd when it comes to knowing every little detail. Heck I have a egt for every cylinder! My main point is in the car world we actually call the gas station supplying e-85 and ask which blend it is they are supplying. Ex. SUMMER OR WINTER BLEND. If your engine is tuned on summer blend and they switch to winter blend you must be careful as the WINTER blend is weaker and may have to pull some timing back. We test every time we get e-85 to ensure we are getting correct amount of ethonlol. Which summer time 9 times out of ten is 90% ethonol which is what my car is tuned for and would be the same for the boat. (who goes out in the winter???) ok some may. lol I would also follow this rule when running in my boats as well. I look at it as merely only a HP performance advantage without considering the fuel consumption cost. I need a complete fuel system anyhow so might as well go e-85 compatible. You can also buy the ethanol testers as well. It just boils down to storage availability in your shop if it is HVAC controlled as we know storing e-85 it absorbs moisture and if you monitor your humidity??
*** on another note for those who buy pump gas Race fuel. (Sunoco) or any others i will not throw out names. Do a moisture and octane level test and see what you come up with. I have also seen heard and read that by "some" standards, gas stations are allowed +- 4-6 % of advertised octane level. So 93 isn't actual 93 but ethonlol again is 9 out of 10 right on the money. Just my 2cents.

In comparison to race gas, E85 begins to look pretty attractive.
Nobody has said that E85 is being considered for low compression cruising.