E85 fuel

[Nasscar]

Was at a United service station the other day to fill up my bike and I noticed E85 (107 octane) at the bowser. First time I have seen that fuel over here. A guy I work with has a worked VF V8 Commodore that he says he only uses E85 in. Has anyone on this forum tried this in the Stinger. I must admit I have only been using 91 as it is compatible and a hell of a lot cheaper. I have read many articles on whether higher octane is required and there are arguments for both sides. I was going to try either 95 or 98 to see if it made a difference to the power. (I don't give a rats about fuel consumption) Just wondering how well 107 octane would go.

 

[NismoDPB]

Running a higher octane than your car requires will provide you no benefits and certainly wont provide you with more power. Aftermarket tunes are used to convert higher octane to make more power.

This goes for E gas as well but in this case, if your car is not tuned to handle an E mix of gas you run the risk of damaging the engine, if it runs at all. Now I have heard on the forums that the stock ECU will run up to E30 I believe, but dont quote me on that. The safest bet would be to find a tune that runs higher octane and/or E85 mix.

Edit: Its worth noting your friends commodore perhaps came from the factory with flex fuel capabilities. I know that's a GM thing.

 

[Nasscar]

Running a higher octane than your car requires will provide you no benefits and certainly wont provide you with more power. Aftermarket tunes are used to convert higher octane to make more power.

This goes for E gas as well but in this case, if your car is not tuned to handle an E mix of gas you run the risk of damaging the engine, if it runs at all. Now I have heard on the forums that the stock ECU will run up to E30 I believe, but dont quote me on that. The safest bet would be to find a tune that runs higher octane and/or E85 mix.

Edit: Its worth noting your friends commodore perhaps came from the factory with flex fuel capabilities. I know that's a GM thing.

Your reply was pretty much what I was thinking. Hence why I have only used 91 up to till now. Was still curious about the power benefits of such a high octane rating. I have never added ethanol fuel to any of my vehicles even though most manufacturers say it is ok. Thanks for your insight.

 

[nhcowboy28]

Nasscar knows what’s up.

so does your manual.

 

[Nasscar]

Nasscar knows what’s up.

so does your manual.

View attachment 36996

Well that answers the question in that thread. Thanks for that cowboy. Always pays to read the manual. I always thought that E85 was more prevalent in North America. If you can't use it in a new passenger vehicle, what vehicles can you use it in.

 

[NismoDPB]

Well that answers the question in that thread. Thanks for that cowboy. Always pays to read the manual. I always thought that E85 was more prevalent in North America. If you can't use it in a new passenger vehicle, what vehicles can you use it in.

There are some passenger vehicles that can use it. Many models from the General Motors line come from the factory with flex fuel capabilities allowing them to run on E85. Not sure if other manufacturers do it too but advertise it less.

 

[Ozstung]

There are some passenger vehicles that can use it. Many models from the General Motors line come from the factory with flex fuel capabilities allowing them to run on E85. Not sure if other manufacturers do it too but advertise it less.

Heard very little of E85 until I got on the Forum, to be truthful wouldn't have been able to tell you what it was.