Octane question.........
#3
#5
Maybe you guy's know more than I about gas engines since I've been around mostly diesels my whole life so please explain. Yes it does cost more to run the better stuff but shouldn't it burn cleaner and more efficiently. I've been running the 91-92 octane in both my machines since the premium around here doesn't have ethanol in it yet. And what harm would this cause other than burning a little hotter. Not to mention My B-in laws 02 raptor 660 states in the owners manual to run a minimum 91 octane and the same for my buddy's 05 grizzly. Their books spec the compression at 10.5 to 1. (I'm pretty sure popo's are in that range) If it could be harmful, why would yamaha state a min. rating?
#6
#7
actually it can make certain vechicles run worse and have predention issues. the higher ocatang gas is to help cooler the higher compression engines like the car pictured in my avtar. this requires only prem. gas or it looses power and causes it to heat the engine more. the only time that higher octang is better is when it has that ethnol crap in it and it helps keep the octang points up higher longer as this gas looses its goodness rather quickly. imo
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#8
actually it can make certain vechicles run worse and have predention issues. the higher ocatang gas is to help cooler the higher compression engines like the car pictured in my avtar. this requires only prem. gas or it looses power and causes it to heat the engine more. the only time that higher octang is better is when it has that ethnol crap in it and it helps keep the octang points up higher longer as this gas looses its goodness rather quickly. imo
#10
if you ran 107 octane in a motor that didn't need it, it still wouldn't cause any damage to the internals of your motor, it does not run any hotter, the reason you get higher octane is to keep your engine cooler. why do you think they run alcohol in the really high compression motors, it burns cooler.