Maintenance & Technical > KX500 Original

ethanol in gasoline??????????

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500freak:
well ive been told that you cant run fuels with ethanol in it in a 2 stroke. is this true or are people just blowing smoke? i have searched on the net but cant find any solid info on this. we've just stared getting 10% ethanol fuels in my area so i hope this isnt true... any info will be awsome :-D thanks guys.

jfabmotorsports.com:
I have been running 93 octane pump gas with 10% ethanol ever sence there was such a thing. No problems yet or maybe I have problems and don't know it.  :|

RM_Rider14:
It's harmless.

kx666:
the fuel / oil mix is not as stable with ethanol fuels, espessally full synthetic premix (usually only used in kart racing due to reguations for easy spill cleanup and power equipment).  Dumonde Tech oils found that blends or casters perfom better and supply better were protection then synthetics in 2 stroke applications.

in the early 90s they stated using methyl tertairy butyl ether to oxyganate fuels per epa requirements. MTBE is not as bad as ethonal but still produced simalar effects: draws mosture, reduces stability of premix, evaperates quickly...  ethonal in addition also will rott rubber, so your crank seals, fuel line, fuel vent lines and petcock will need servicing more frequently. If you didnt notice much in the 90's you may notice little change after 2006.  Low octain (87 to 96 Motor octain, not research or an average) race fuels are a better option if they are available also the spicific gravity plays a big part on the operation rpms and heat generated from the motor.

I am by no means a fuel expert, and my understanding of fuels may not be 100% accurate if this is the case please correct me.

-steve

500freak:
when you say it makes the premix unstable, do you mean that the gas/oil will seperate easier?

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