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I use ethanol free gas in my 2 stroke Zuma and lawn equipment. The guy I bought my Monkey from said regular unleaded is perfectly fine for my Monkey. Anyone have a different opinion.
 

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I use ethanol free gas in my 2 stroke Zuma and lawn equipment. The guy I bought my Monkey from said regular unleaded is perfectly fine for my Monkey. Anyone have a different opinion.
I use 99 octane E5 when I can get it, which isn't always, and 95 octane E10 most of the time. Doesn't really seem to make much difference.
I do use the premium stuff for 2 strokes though.
My wife's supercub 125 has only ever had regular.
Just checked in my handbook and that states 91 octane or better and upto 10% ethanol is permitted (E10)
 

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I've always heard that on bikes with smaller tanks, you end up with mostly what's in the line when you start filling (whatever the last person was pumping).

That said, I still pay for premium and always get ethanol free if it's available.
 

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In the UK I am trying to stick to E5 ( 99 octane 5% ethanol) for everything. Even handbooks for vehicles less than 1 year old seem to grudgingly say that E10 can be used but E5 is preferred. Its not so much about performance but more about the as yet unknown long term effects that may or may not cause deterioration of non-metallic parts of the fuel system. Time will tell! My vehicles in everyday use achieve 50, 75+, and 150+ miles per UK gallon respectively, so the premium price doesn't hit my pocket too hard.
 

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You get more power with a low octane gaz. The more octane you have, the more it is difficult to light. High octane is for high compression and tight tolerance in mecanical fittment. In a sport motor, the power came from tight tolerance not with the high octane ratio. Tight tolerance induce high heat from friction so you need high octane to prevent auto-burn (ping).
 

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You get more power with a low octane gaz. The more octane you have, the more it is difficult to light. High octane is for high compression and tight tolerance in mecanical fittment. In a sport motor, the power came from tight tolerance not with the high octane ratio. Tight tolerance induce high heat from friction so you need high octane to prevent auto-burn (ping).
Jeff (Ottawa)..R U nearby ? lots of rail/trails just west of the city .1986 xl100.
 
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