Is there any advantage whatsoever in using upper cylinder lubricants such as Redex (if it still exists) or a dribble of top quality 2T oil, I know that would not cure piston expansion beyond the bore diameter, but would it help in marginal cases.
That's why the boys in "the know" use a bit of synthetic in the oil until normal running in cures the nipping, as I suggested. I'm well aware it isn't best engineering practice but it can save a lot of work. If it nips a second time (and you should catch it immediately) then you will have to hone it out a bit.Is there any advantage whatsoever in using upper cylinder lubricants such as Redex (if it still exists) or a dribble of top quality 2T oil, I know that would not cure piston expansion beyond the bore diameter, but would it help in marginal cases.