When my Husqvarna saws were new I used the husky oil. Mixed under 40:1 more like 38:1. They lasted me over two decades. I was told only to use husky oil in my new saws because they have tighter tolerances. I believe in using the manufacturers two stroke oil. I do run them oil rich. The little saws will foul but not that often. The bigger saws never fouled plugs running slightly oil rich,
In dirtbike engines old vs new. The cylinder liners went from castiron, to industrial chrome to nickasil. The old days with castiron they used castor oil, today maxima offers a blend of synthetic/ castor oil with there 927.. The industrial chrome and nickasil we can use the super maxima oil.
My point is what material is the cylinder in the two stroke.
I tried to hone a cajiva cylinder on the husky once my hardest stones couldn’t do it. The stones in oil squeezed. The huskys chrome cylinders looks like the cajiva. This is why some seizures don’t mark the cylinders.