If the "VRO" failed, there would be nothing left to use on your powerhead,
because even the cylinder scoring would be deeper than the .030" overbore
that the factory allows. The crankshaft would be trashed as would all the
bearings and races. The rods, wristpins, and needle bearings would have
melted together for lack of lube. Imagine what a motor would look like if
you normally premixed the fuel and one time forgot to add oil !!!!! It
would
be an absolute mess internally, and froze up most likely.

I call BULL****

I 've repaired *many* Mercury outboards that were designed for a 50/1
pre-mix - that somehow got put on a sudden wayward diet of straight
gasoline. Damage and results vary. This is probably dependant on operating
RPM and residual fuel mix left in the old tank.

Unless that is.. that OMC powerheads just don't have a chance under
stress...????

-W