Thread: Opti-2
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Old 01-11-2018, 10:42 PM
Join Date: Jan 2011
Location: Columbia, TN
Posts: 273

Originally Posted by tkwalker View Post
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.
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