I Have 98 FLHRCI what octane do you guys try to run?

 

Premium only in my 97FLSTC.....

 

The local BP stations have ethanol-free, 91 octane. That's what I've been putting in my FXR.

 

93 premium.

 

premium 93, unless I use ethanol free, then its 91.. Honestly, you should be fine with anything that doesn't ping.. The rating is just that, a burn rate which helps to control the tendency to knock.. I simply do it because, I'd rather lean to the safe side for hot days and neither of my bikes are stock.. I don't care about the cost since its double the mileage of my truck anyhow.. Depending on the bike, you may also notice better mileage on a particular octane too..

 

Highest grade @ Gas Bar Always

 

Standard compression bike will run fine on regular.

 

I run 87 or 89... no need to run premium with stock CR.

 

My Manual calls for Premium for 2007

 

And your 96 inch twinkie is fuel injected and is running on a higher CR than a stock evoglide.