BC is *completely* entitled to post his opinion, even though it is SO concisely. Never seen him discuss that oil flavor with only two words....well done, Bill !

Oil choices are personal ones, just like which engines to buy, and whose advise to listen to.
bcchi is one of those whose advise should be listened to attentively; he has forgotten more than many of us will ever learn in this hobby.

BTW - Pennzoil 2C Air Cooled is REALLY a great oil for our model airplane gassers....plus, the exhaust has a nice color and scent, and leaves little black dots of residue. Proof that the engine is getting lubricated. GREAT STUFF!!!!!!!!!!