Carbon buildup

[WA5VHU]

If you run highway speed for several miles at 75-800 MPH you are doing that job...

Hey Wacky, can I ride on the back? I've never gone that fast! :yikes::yikes::yikes::yikes:

 

[BLUEKNIGHT911]

OCTANE & PERFORMANCE

I disagree. Thought the 998cc Rotax will run on 87 octane. It is designed to run on premium fuel. It will run on lower octane fuel because the computer retards the ignition timing to compensate for the low octane. But if you want your 998 to run as designed. You need to give it the fuel it was designed for.

It is true that all fuels from a particular vendor come with the same additive package. They promote the additive package for the premium fuel to make you think you're getting something more for your money beyond just the octane boost. But it isn't true. If you're engine is designed to run on 87 octane. You will get the best performance from 87 octane. Buying premium fuel for an 87 octane motor will actually reduce performance.

Ron I agree that there is a performance difference ....but if you had 10 RT's with the 1330 engine , nine using 91 octane and one using 87 octane. I'm very sure no here could pick out the one using 87 octane. That's how small the difference is ....... Mike :thumbup: