@Keith Gandy I don't actually know precisely where my tune was at that particular day. I don't use a tach. In my opinion it was certainly on the "safe" side. Now it certainly could have been my fault and no fault of the oil.
Just that there's no doubt she was dry dry dry inside. The bearing is what gave up. Gave the Piston just enough play to start touching the roof of the Cylinder. A chunk of the Piston or roof of the Cylinder is what stuck the ring. Easier to see in person just what had happened. I'll certainly not use any more Lucas.