Originally Posted by tkwalker
All outboard oil manufacturers blend in to their oil a synthetic additive. You will notice, it is listed on the container ... TCW-3. It stands for Two Stroke Water cooled -3rd upgrade. It controls a number of things during combustion some of which is ash and other residues and adds more lubrication. <'TK><
Thanks TK, I have had that question on my mind for years. I never think of looking up the answer while I'm on the computer.
While I am at this what is your opinion of a full synthetic TCW-3 vs a synthetic blend in a 1998 225 Evinrude. I was thinking it might reduce the smoke cloud that I get with a regular TCW-3 oil.