I thought using a higher octane fuel usually makes an engine run COOLER.Yes, El Chorizo, I would tend to agree. For what it's worth, I have a 2012 fuel injected Quad and I was informed more than once that using high octane fuel would only make it run hotter. No real advantage. My high performance CRF, though, drinks the best. And she loves it!
Octane is just a measure of the temperature before combustion starts. Thats why on high performance engines you need higher octane otherwise they will detonate. You will get combustion before the combustion cycle and thats not good.I thought using a higher octane fuel usually makes an engine run COOLER.
I do disagree on the power less, though I do suggest that the power loss might be very slight, if even unmeasurable...Octane is a fuels resistance to knock (pre-det). It won't create more power without a retune. It will also not lose power.
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Yes what hisensausage says is exactly correct..The problem with using higher octane when you don't need to isn't just about cost -- its about power. Using 93 when you don't need to (or 91) -- it actually COSTS you power. If the thing was made to run 87 octane -- you'll get more power, better gas mileage by using it then you will with 91. Now, if you can take advantage of the higher octane somehow... on a car, we would increase the timing for example. Increased compression would be a way on the bike.
Anyway, unless you have something thats going to cause the motor to detonate on 87 octane -- I would not suggest going higher. It won't help by itself.
Are you talking pure ethanol?I only run non ethanol. Plenty of places around me with it. Although I will probably run two tanks of ethanol through to see what the gas mileage and performance is.