Re: Age old question - 87 or premium
Posted: Sun May 29, 2016 9:09 pm
I think you'll find they use lower octane because it detonates faster thereby giving more power at the risk of a hotter combustion. The higher the octane the slower the detonation.thunderkat59 wrote:Harley motor drag bike guys use lower octane fuel in their race bikes because the flash point is at a lower temperature and spread out more on the top of the piston.