Originally Posted by Downhilldai
The gear oil shouldn't contain any 'bits'.
Depends how large they are.. because I have to say that in all my experience of draining hubs and gearboxes, its true to say I have seen more metallic oil contamination from outboard legs, which people suggest is normal which to me doesnt look like it should be
. Perhaps its down to the metals used in the gears, but in any other environment if I see flakes, or grey or silvery oil, its a portent of something to come, and yet, the legs that I've seen it in, have run on and on
Obviously the situation here as outlined by the OP is different, as there is a failure involved, and I suspect that people with outboards in general do not change their gearbox oil often enough, because its a smelly dirty job, but by jingo its an important one, and not least of all because its submerged so much ,.. its an annual job IMO