I am wondering if anyone has ever tried using Slick 50 after they have broken in an engine. I am not talking about in the gas, but just to squirt some in the cylinder and the drain it out of the exhaust port. I know that it works with 4 strokes because one time 10 years ago, I drained the oil out of my Sears riding mower and got distracted and didn't refill it. I mowed for 1.5 hours with no oil. I had added the Slick 50 even though Sears told me that it would void the warranty. 10 years later it still runs like it is new and starts up instantly with no smoking. I still use it in all my mowers.
I don't know what would happen with a 2 stroke ABC engine, but I would be interested to know if anyone has ever tried it. I also had a Glasair that I ran Marvell Mystery oil in the gas and the oil. I never experienced a sticking valve like a lot of others did. Tons of people swear by it and I have read where people say to add it after running RC engines. Would this help stop seizing?
One other question. In an ABC engine when you break it in are you matching the piston to the sleeve and if so, what happens if you take the head off and the sleeve moves? I know, don't move the sleeve...but is this the case?

Thanks for the replies. I had been out of RC for 15 years so I wasn't familiar with many of the new products that are available. I did not use Slick 50 in my plane, but only Marvel Mystery oil for over 15 years with absolutely no problem.