Thanks 'remoak' & 'tankengine' I didn't want to go too deep with all this but I think GG might now understand what we are trying to talk about here. Filling an engine completely with oil would take an extraordinary effort inc blocking off the exhaust system & the intake manifold/s:-) Just filling the engine 'till oil overflowed out of the filler point only means no more can drain down into the sump, the bores would be mostly M/T.
Wmk2