Decided to test the E85 at our local gas station to see what the actual octane was of the corn.

You fill the tube up with distilled water up to the line at the bottom, then pump E85 to the line all the way at the top. Turn the tube upside down several times, and let the corn and water seperate. The seperation line will tell you exactly what the octane actually is. Best part about it is, cost only $3.19/gallon



Based on the results of the test, it looks like the summer blend is E90

 

Nice, that is some fairly potent stuff

 

You can also use a Zeitronix ethanol analyzer as well....IMHO, I would recommend tuning on the low side of e-xx based upon your area. If your tune is for e85 and you run e50, you could have issues....

Although e85 is great stuff, I would not recommend it for a daily driver as the mpg are worse than standard pump....

 

And it takes a few minutes to run decent on a cold start up, at least with the S4 it does.
Are the inside of your tail pipes clean too?

 

100% correct man Must be a corn thing.

 

Very nice sir! I'll be doing the E85 conversion right after I hit 10 seconds.

 

What does it take to convert to E85??

Is this just a E55 thing or can E63 guys plsy too??

 

Tester looks Familiar Craig

 

The winter blend works just as well..I was concerned years back about the "E70" but it made no negative difference at all.....the stuff just works! Boost freely!

 

smells like in here