After reading all of these post I'm sticking to the one I have been using. I like the fact that even when the engine is hot or cold the oil film stays on the cylinder, piston and in the ports. I run a little bit more oil in the fuel just for the peace of mind. 45:1 Make sense to me that if the oil is clinging the possible dirt, fines, carbon etc. isn't. Torn down one engine (a clone) just to see the wear patterns on cheap stuff. After approx 40 solid hours on FT clone 460 very little wear and no carbon even on the plug, comparatively that means my real saws are not wearing at all. Proof enough for me, ECHO RED ARMOR, BARR NONE