What grade of gas do you use?

[RickJ]

I didn't see it mentioned here...the difference, as I understand it, is not that one grade is ANY better than another, but that the difference is the point at which each grade ignites under pressure. (http://engineering.mit.edu/ask/what%...gular-gasoline) if your engine isn't made for it, premium won't help it.

Finally, here's a link to a scholarly article search on the difference...I haven't checked out the articles but I'm sure they will be of great interest to those smarter than I.
http://scholar.google.com/scholar?hl...%2C33&as_sdtp=

[seadog]

I run a good quality of gasoline, and I think that's more important than whether its 87,89, or 93. We have some garbage gasoline here in Michigan, Wesco being the worst. Crystal Flash and some other are just poor quality gas.
I always run Shell, BP, or Mobil. Those always run perfect even though I use 87 octane. 90% of the time is Shell which I am a firm believer in its quality.
I used to have a back and forth to work car. A little 4 cylinder and it was starting hard and when cold you would get out on the road and step on it and it would bog down and then take off, you stop at a stop light the whole car would shake. Poor mileage and lack of power were common. I ran it down to almost empty and put Shell regular in it and that car change so much in 3/4 of a mile from the station, I just couldn't believe it, It didn't shake when stopped,it had more power, it started up quick when cold and never bogged down when you stepped on it. It was like I bought a new car. After that everything I own runs on shell gas.

[shooter]

I agree on the Shell Dog. BP is good also.

[Dirtstiff's F6B]

92 limits the cold engine stall.
J

[hardtail]

+1 for Shell.

[shooter]

92 limits the cold engine stall.
J

I've said that before Dirt. My 13 has never had any issues with that.

[Madmax]

91 to 93 , try and run shell or BP . Over the winter I switch to a ethanol free fuel in all my machines .

[DaWadd]

Shell 87 most of the time.

[Dirtstiff's F6B]

I've said that before Dirt. My 13 has never had any issues with that.

Ya,
So I think I said it in Nov. 2013.

[cosborn]

We only have 91, 95 or 98 so i stick with the cheapest and use a higher octain every few tank fulls.

Chris