I read thru all 32 pages of the thread yesterday. Alot of the technical info was over my head. But quite informative to say the least. So the ashless oil doesn't smoke? Or is it very minimal? I don't want to burn up my old saws because tear downs and parts are a real pain. I am mixing synthetic oil at 32:1 in old 1960s 16:1 era saws as recommended by guys in other saw threads here. When idling no smoke then alil smoke when throttled up then no smoke when I'm wot. Is that normal. And I have yet to figure out the 4 stroking out of the cut. I'm just a hobby logger and firewood guy. Newer echos and 1960s remingtons. Thanks guys for an interesting and informative thread. I guess I did one thing right by running red armor as it has been suggested in the thread that it's towards the top in quality.