I generally run 93 octane

 

Sunoco 93

 

93 Chevron/Shell pretty much exclusively.

 

Sunoco 93

 

93 always, Sunoco, when I can. (That's what them NAISCAR people use)
Never tried anything less than 93, so I don't know how it would react.

 

It's hard to get anything higher than 91 octane around here, except at the HD Dealer. 91, 101, 105 octane choices there. I often do a blend. It's stupid to save a dime a gallon on a 5 gallon tank.

 

I have mostly run 93 her in Tx. But I have used reg and mid just as an experiment and to be honest the lower octain gave me better MPG's, but I switched back to the hightest per manual.

 

shell 93 octane always

 

Husky oil has 94 up here ..i use that

 

92 or 93 from Shell or Chevron. The one time I had to run a tank of 87 it pinged badly under any sort of load.