2 stroke oil question....

[Piscator]

Originally Posted by nightfighter

I am not an engine guy at all.... That said, the mechanic I put my trust in says he can tell what quality oil has been run through an engine when he opens them up. I use the manufacturers recommended oil as it has all the additives. Yamalube and Ringfree religiously and my 1993 200hp is running strong. And I have been putting more than 400 hours a season on it for the four years I've owned it.

Agree, I forgot to add that I use ringfree as well...............

[Rockfish9]

The only thing with ring free is, if you are going to use it, it needs to be used from day 1... if you use it on an older motor, it tends to swell any carbon behind the rings and thus causes them to bind, over heat the engine and lead to failure...if you use if from day one, this never gets a chance to happen...as carbon does not accumulate..