Dealership filled engine with too much oil...

[Sir A.Y. Atoyot]

The way I heard it, what happens when you put 'way too much oil in an engine is that the crankshaft counterweights and the big ends of the connecting rods hit the oil and beat it into a froth. Enough of that and the oil pump starts sucking air. Since air is compressible, unlike oil, this can cause an air lock, and goodbye bearings! OP is lucky if no damage was done.