No smoke using T2 synthetic (two stroke) anymore

I'm using the same amount from the oil tank on my newly rebuilt 84
RZ-350 but the smoke and smell from the exhaust keep getting less and
less, to the point I'm just a bit worried about adequit lubrication.
The oil is low ash synthetic T2 (forget the name of the mfg) but maybe
2 stroke oil burns up better these days without any smoke.

My friends when riding behind me confirm the smell and smoke are
almost non-existent, even when I'm at full throttle. What gives?
Opinions please?

Bob Nixon. (one legged half hearted=literaly biker)

 

"Bob Nixon" wrote ...

A few years ago I switched to Klotz synthetic two stroke oil for our
snowmobiles and there was hardly any smoke or odor compared to the "regular"
Arctic Cat injector oil we prevoiusly used. I think with direct (fuel)
injection and modern oil, two strokes could be as clean burning as a four
stroke.

 

We used to use a full-synthetic oil in RD350s as long as 30
years ago. Very little smoke, if any, and much improved plug life.
Excellent lubrication, even of rod bearings (as evidenced by a
teardown or two for other reasons).
It somehow doesn't evoke the same feelings as a snort of
exhaust laced with Castrol R, but then the unleaded fuel just doesn't
have the same bouquet, either.
Just make sure the oil pump cable adjustment causes the
witness mark to line up exactly at full throttle, and you're good to
go. I envy you your wonderful little ring-ding.

 

35 years ago, I used about two pints of Blendzall castor. It caused my
piston ring to stick in its groove and I was very embarassed at
Saddleback Park, trying to impress the Husqvarna factory team with my
250cc Yamaha that had no more power than a 125cc machine.

When I pulled the cylinder off, I discovered that the exhaust port was
full of castor carbon and the expansion chamber had an incredible
amount of crud in it.

I finally got all the crispy critters out of the pipe by pouring
carbon tetra chloride into the expansion chamber and letting it set.