This is the oil seal
around the input shaft (pinion). There is no water
intrusion just lots of 90w coming out of the bell housing. I was Lucky I happened to smell the oil and shut down the engine
about half the oil in the unit. I had only looked at it an hour before and there was no issue. Hopefully I managed to shut it down before serious damage was done. At least there were no bad noises coming from the drive. I needed to use it for 15 minutes to get it docked. Even though I filled it to the full line before starting it again, after docking
there was no oil on the dipstick and a lot in the trap below the engine
so the seal has had a major failure. I have ordered the parts
for a repair but they won't be here for 3 weeks. It almost seems too much for just a leaky oil seal, but there's not much else in that part of the drive. About the only other possibility I can think of is that the bolts that hold the oil seal assembly in place have failed and the whole assembly has come loose. I guess I'll see when I get it apart.
Have you had good luck with the Amsoil?