Posted for Rino <lacombr@nbnet.nb.ca>:

There was discusion about this on the other list a while back.  The
conclusion I got from it is that since the engine oil is injected and
burned in the combustion chamber, the synthetic oil residue seem to
dammage the catalytic combustor in the car.  Tracy uses and recommend
synthetic.  Of course, he uses two cycle oil in the gasoline.  I will
use Mobil 1 and two cycle oil mixed with the gasoline.

Rino