A friend Emailed me this and he said that he thinks numbers 1-4 were ethanol content representations with 1 being pure E85..Does this look plausable to anyone?? I would think there would be more 85% offered for longer?

 

I don't think FlexFuel cars in the USA are designed to run 100% Ethanol.

 

Petey, it makes sense to me based off what we see in CO. It's so cold here that they give us E-70 during the whole Winter to help with cold starts. We scramble to find stations that maintain E-85 all year 'round. Our pumps even say "minimum E-70" on it whereas in San Diego, the pumps say "minimum E-85." It makes sense why Cali would have more 1s and 2s than CO. Also, I am able to run much more timing now than when I first tossed in E-85 back in Feb/Mar.

 

I think I have posted this before.. But maybe only a part of the table. It's too bad you didn't just name the thread "E85 seasonal blends by state". Maybe mods can do it. It'd be good info. The "volatility" name is a bit hard to understand.

Aaaanywho, here are the classes:

Summer Blend: Class 1 (min 79% ethanol)
Spring/Fall Blend: Class 2 (min 74% ethanol)
Winter Blend: Class 3 (min 70% ethanol)

 

This should be common knowledge to E85 users. It can be found in the guide book.
http://www.e85fuel.com/pdf/ethanol_guidebook.pdf (pages 24 & 25)
Bookmark it!

 

What are the nominal values of the three classes?

I assume Class 1=E85 and Class 3=E70, correct?

What is Class 2?

 

Thanks for the excellent info!

 

I'm honestly not sure what you're asking me here.... There's a fuel called E85. There's no E70 or E77 or E80.3 ..... There is only E85, that contains different amout of ethanol depending on the month and location. The table tells you what that ethanol content is. Maybe i can reword it to make it easier...:

Summer Blend: called Class 1 in the table, contains at least 79% ethanol
Spring/Fall Blend: called Class 2, contains at least 74% ethanol
Winter Blend: called Class 3, contains at least 70% ethanol

 

Sorry I meant the "full" 85% if that makes sense

 

Yeah the pumps here also say min. 70%

 

Consider the thread title.....Changed
edit: oops, it only changed the title after you open the topic

 

Soooo, looks like hawaii is the best place to own an E85 tuned evo!

 

Class 1 = E85 = minimum 79% ethanol
Class 2 = E75 = minimum 74% ethanol
Class 3 = E70 = minimum 70% ethanol

From HotRod...so, YMMV

"The first thing we need to know is that E85, the most common of the ethanol fuel blends, is actually three fuel grades. Class 1 or "pure" E85 contains 80 to 84 percent ethanol, while the remainder of the blend is commercial-grade (around 85 pump octane) gasoline. Class 2 or E75 is 75 to 79 percent ethanol, while Class 3 or E70 is 70 to 74 percent ethanol. However, all three classes of fuel may be marketed as E85 at various times during the year. While it seems confusing, this is done mainly to offer better cold-starting performance-which is a problem with ethanol fuels. Since straight ethanol has a relatively low Reid vapor pressure (meaning it doesn't like to light off at low temperatures), greater percentages of gasoline are added to the blend for colder weather. So while E85 is often described as 105 pump octane, its actual rating can vary depending upon the seasonal blend. Naturally, higher gasoline content will tend to lower the pump octane from 105 for "pure" E85 to perhaps 100 for E75-though these figures are approximations, it is important to note. Since ethanol is relatively new on the consumer scene, it is just not as thoroughly documented or standardized as gasoline. This is why, in part, you may see E85 described as anywhere from 100 to 106 octane."

For a reference, see top of page 33 in the industry specs.