Re: Oil ratio for a Scott Atwater 16

[Leon]

Well, in the 30+ years I have ran engines, I found that replacing a fouled plug, is much easier (and cost effective), than it is to change a scored piston. Anyone disagree with that? 😀
Sure, the excess oil may or may not add benefit, however, more oil will pass through the moving parts while they spin.
I don’t hold 100 percent credibility to factory recemendations anyhow. Some have not been correct. You have to remember that when the engineers design these engines, they are going by their best judgement and the real results of their "judgement" won’t show up till years later. As it has been pointed out, OMC changed their oil recemendations in around 1964 or 65. I believe in this case, the Lightwins may have been victimized by this change, because they still were a 100% friction motor! So, I don’t hold factory recemendations gospel.
To add what I said about chainsaws and dirt bikes earlier, these machines spend a very large percentage at wide open throttle unlike outboards which usually only are at wide open throttle going to and from the fishing hole. Then they spend a large amount of time trolling. Well, dirt bikes, chainsaws and all other 2 stroke engines very seldom ever idle or troll.