Yup... people have been using standard non detergent oils in their 2 smokers for decades before all these specialty oils came out with no trouble at all... I remember growing up everyone just bought regular motor oil and mixed it up for their dirtbikes and nobody messed up their engines. The new synthetic oils are really good and do the job quite well but nobody's ever messed up an engine running between 20:1 and 40:1 with regular non synthetic motor oils... that's all we used about 30 years ago.
Yeah, I been wanting to experiment with one of these engines on an old school oil mix for a good while, Im NOT recommending people to do what Im doing with this one, but since this is pretty much how all 2 stroke were run for years and other countries still use whatever oil they can find for the 2 strokes.
Ya know how us tinkerers are, always gotta be messing with something just for the heck of it, Im just having a little fun with this one and after pulling the head off yesterday and replacing the little round pancake head for the Puch Hi Hi 70cc head I can tell the engine is getting plenty of protection, bore looks very good, piston has no buildup on crown, just a dark slick shiny plating of carbon.
I guess the biggest surprise to me so far is the lack of smoke, I was actually hoping fo a good smoke screen @ 25:1 on the 40wt non detergent but this thing hardly smokes at all accept when it first starts up and even then there isnt that much unless I really rev it out a few times, this leads me to believe a lot of oil is staying in the crankcase and kepping things lubed up good.
Another good thing is I have several quarts of the 40wt non detergent, bought a bunch a couple years back at Big Lots because thats what I like to use in my chainsaws for bar &chain lube, never liked the thick stuff.
Im gonna run this engine like this for it lifetime is the plan right now, heck it might outlast me....lol!