Are you talking about synthetic two stroke oil?
I think all two stroke oil is synthetic.
You have a brand in mind?

Paul Lamar

Don't know - I just remember a friend (moved
about a year ago) with a Kitfox said that you
had to be sure to use the synthetic twostroke
oil, because the "regular" (whatever that is, I
assumed mineral oil, like from crude oil) would
"carbon up the rings".  End of report, I don't
know any more, just passing on a comment.
Perhaps an aircraft Rotax operator out there has
more info to pass along on this subject.  Seems
like they had to do a check of rings to see if they
are stuck every 50 hrs, push on them with a screwdriver
thru the exhaust port.

I think that your burn tests showed lowest ash
with the 2 stroke synthetics, didn't it??

Bill

Yes that and turbine oil.

PL
 
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