This jokes on me

Yes, before anyone asks, I had been putting oil in it. That makes it even more embarrassing.

John

What were the clearances?

Tom

John,

You never stated whether it was a suzuki or a Yamaha in which case it would have had reed valves. :-))

Martin P

to be very agreeable to my chainsaw over about

Sorry Arthur, I meant Redex upper cylinder lubricant. I'm showing my age but I remember it being sold from a dispensing gun on forecourts. I'm sure that the modern 2T oil is excellent. Not really my field though.

John

Well that raises an interesting question - do small motorbike

I'm not aware of any. I'm sure others know far more than I about them, as this post demonstrates. BTW Martin, it was a Suzuki ER100. As an aside, I read on another NG a contribution from a well respected oil development engineer. He pointed out that 2 stroke oil was an upper cylinder lubricant was far superior to anything red that is sold as such.

John

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I don't remember much about 2t bikes but chainsaws ran on unleaded from early times, simply because the compression pressures are less.

I do know that if you forget to put lubricant into the fuel that the saws take much longer to seize with leaded ;-(.

AJH

Do you mean that conventional 2t oil is better than modern (red) synthetic 2t oil, which is used at lower concentrations?

Though initially dubious about it, I've found synthetic (red) petroil mix to be very agreeable to my chainsaw over about nine years of periodic heavy use, coppicing and logging.

Regards, Arthur G.

"Andy Dingley" wrote >

Clearly no problem with VSR, but I guess the reduction in octane rating could effect some more sporty models.