E85?

[SILVER SLED]

I talked to GM technical asst, and the diff between E85 and non E85 vehicles is the tuning. All the equipment is there. And technically it can not be changed through GM, he said with a smerky laugh. It may be able to be changed, but prob not through a gm update change. I'm led to believe thats its more than just an enabling issue, but more like a dealer would have to recieve the tuning via GM then download it into vehicle. But, I was told with emision strictness and playing buy the rules, it prob isn't possable. Now the aftermarket tuning possabilities, who knows.

[atxboehlke]

I'm in Austin, and there are exactly 3 stations that sell e85. They are all exactly .50 less than 87. Where are you?

 

I work in Lampasas and they have 2 stations that stay around .10 cents under regular.

[austingta]

 

I work in Lampasas and they have 2 stations that stay around .10 cents under regular.

That is weird isn't it? Are your stations HEB stores? That's who sells it here.

[Brian S.]

I bought a 2014 Sierra recently and was surprised to see it is not a FFV. I never even thought of checking when I bought, thought they pretty much all were.

 

Don't care about the power bump much, but I liked supporting farmers and American industry.

[patriot]

I bought a 2014 Sierra recently and was surprised to see it is not a FFV. I never even thought of checking when I bought, thought they pretty much all were.

 

Don't care about the power bump much, but I liked supporting farmers and American industry.

...and don't forget the American taxpayer-funded subsidy on alcohol produced from corn to MAKE E85.

[bigsapper]

I bought a 2014 Sierra recently and was surprised to see it is not a FFV. I never even thought of checking when I bought, thought they pretty much all were.

 

Don't care about the power bump much, but I liked supporting farmers and American industry.

You can comfort then that most everyhting else is E10.

[haider320]

I wouldn't worry about flushing or running it out of gas first. Fuel labeled E-85 is actually usually less than 85% ethanol. It will be a maximum of 85%. They mix ethanol with gasoline before you pump it, so the percentage varies a bit. I buy it at two different places and haven't noticed any difference. Our engines have 11:1 compression so they need a lot of octane to avoid detonation. The only way they will run properly on low octane gas is to retard the timing, killing performance. E-85 is 100 octane or better, which is what a high compression engine runs best with. If you have a couple of gallons of straight gas in your tank and fill with E-85 you will still have plenty of octane.

exactly what he said.

[redwngr]

At a Speedway that is shocking, they only price E85 10 cents less around me in mid Michigan. The Meijer was 35 cents less at 1.84 when I filled up yesterday. What area are you in? Midwest somewhere if its a Speedway?

Interesting that the pump label in the picture says that the E85 is 'Minimum 51% ethanol'.

[mjj]

Interesting that the pump label in the picture says that the E85 is 'Minimum 51% ethanol'.

I noticed that too when I filled up at Speedway they say 51%. The Meijer stations say 71%. I thought I read somewhere it had to be at least 70% to be called "E85"??

[MikeNH]

Maybe they reduce ethanol content even more in the winter?

[calgator73]

ASTM changed the rules...more fraud at the pump. http://ethanolproducer.com/articles/8819/astm-lowers-e85s-minimum-ethanol-volume-to-51-percent

[RyanbabZ71]

ASTM changed the rules...more fraud at the pump. http://ethanolproducer.com/articles/8819/astm-lowers-e85s-minimum-ethanol-volume-to-51-percent

How is it fraud if the post the minimum content. Here the pumps say 70% min ethanol

 

 

Ryan

[calgator73]

But yet they call it e85. My pitch is to be honest in marketing. Retailers do not tell you the actual ethanol content in your fuel....I suspect that to do so would undermine the public's perception of the product.

[calgator73]

 

 

 

But yet they call it e85. My pitch is to be honest in marketing. Retailers do not tell you the actual ethanol content in your fuel....I suspect that to do so would undermine the public's perception of the product. Imagine if they advertised 93 octane as minimum of 87.

[mjj]

I wonder if any of the tuners have logging that captures the data from the sensor that detects what percentage of ethanol is in the fuel.

 

On another note has anyone looked into or has gotten an E85 tune from Andy at http://dynotuneusa.com or another tuner specializing in E85 tunes?