Is E85 in the winter bad?

[iboughtatahoe23]

possibly, e85 burns cooler I have been running it this late summer with no issue's and as soon as the weather cooled off I am now getting a p0420 code that I have not resolved yet trying to burn up the last of th e85 in the tank to see what happens a 50/50 mix is not working for me. I will note my cat's are aftermarket so they may not be as efficient as oem.

I’m running half 87 and half 85 rn

 

[iboughtatahoe23]

I have yet to see better than 60%

Really?

 

[iboughtatahoe23]

I have run nothing but E85 for the last 3 years here in Colorado I haven't experienced anything bad. This includes morning drives at -20 degrees.

Maybe it affect higher mileage vehicles more?

 

[Doubeleive]

I’m running half 87 and half 85 rn

i keep getting a p0420 just kind of odd that it didn't show up until the weather started changing the cat is only 5 months old and maybe 5-6k miles on it

 

[George B]

Really?

Thats usually what my Suburban calculates the percentage to be. I will check it again. I just filled up again. This time my mileage was down a bit more so maybe it’s higher percentage now. It’s currently at $2.399 a gallon which $0.60 cheaper than 87 so maybe there is more alcohol.

 

[George B]

Thats usually what my Suburban calculates the percentage to be. I will check it again. I just filled up again. This time my mileage was down a bit more so maybe it’s higher percentage now. It’s currently at $2.399 a gallon which $0.60 cheaper than 87 so maybe there is more alcohol.

Spoke too soon. 80%


And, that explains this mpg.

 

[Fless]

I’m running half 87 and half 85 rn

Are you talking about alcohol content, or octane?

 

[petethepug]

Brake fluid has more of an affinity for water than e85. I’ve run it for past 3 years exclusively. Even through our last El Ninõ and a rare hurricane, no issues with corn gas. The best part was that it smoothed the idle down after the first tank and got the trans to kick down sooner from hp coming on earlier.