Originally Posted by KINGREX
I have been running ethanol free gas in my 04 carbed roadking now for the past few months. Now I've known and have used premium gas since owning the bike and just realized the ethanol free stuff is 89 octane. Oops. It seems to run fine and there is no pinging under acceleration. Fuel mileage has been about the same as always (low 40s). Does the collective think I could or have possibly caused any harm to the motor running the 89 octane despite it being ethanol free. Any comment wil be appreciated.
As long as you are not gettng any detonation (pinging) then all is good.
Current bikes in the stable:
2009 Street Glide
- 107ci, stage III heads, D&D Fatcat exhaust, Andrews 54 cam, TTS, 108hp 122tq
2003 Heritage Softail Classic
- 95ci, stage III heads, RB LSR exhaust, S&S 510 cams, 100hp 102tq