I am thinking about switching to this oil and need some information about it. I have a 1987 Mercury 9.9 hp motor with 3 gallon tank. People have been telling me its good and some it could hurt my motor. Do the ratios matter for mixing oil on older motors? Will anything happen if I switch to it?
On another forum a guy gave me this information:
Ams Saber - recommended for tc w3 and api-tc
API-TC is designed for air-cooled HO, high rpm motors... and your local dealer recommended it? I wouldn't go there for repairs...
Here is a quote from an excellent article on marine use 2C oils:"It is important to note that oil designed to meet TCW3 specs. only (Ashless) will not protect an engine requiring API-TC (Low Ash) type oil. The converse is also true. Using a Low Ash oil in an engine designed for an Ashless type oil only could result in fouled plugs and gummy combustion chambers. " Gummy combustion chambers mean stuck rings. Stuck rings mean rebuilt powerheads. Maybe he needs more engines in his shop for work.
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