[Clearsky]

After about 4 weeks sitting with engine fully down I noticed a small amount of oil seeping from behind the prop. The oil is pitch black, and only a few drops have come out, nothing came out for the 1st 3 weeks of sitting with engine down. I have checked the oil in the gearcase and it was clear and was still full. I have run the engine on muffs a couple of times in the 4 weeks. Could the oil just be exhaust residue? or is it likely to be a seal behind the prop.Just one more thing, is it recommeneded to leave engine down or up when not in use for long periods? I put it down as I was thinking it would relieve from pressure from the transom and the tilt and trim, but I'm only guessing.Any advice would be great.Thanks

[ob]

It's just exhaust residue.No big woop.If the exhaust housing however is collecting this residue regularly,it is indicative of the engine being in need of a decarb.Might also insure that 60 hp engine is propped to turn 5500-6000 at wide open throttle as well.Overpropping causes coking of cylinders as well.Lots of slow speed trolling loads them up too.

[Clearsky]

Thanks OB,I should have mentioned, I'm running a 25 to 1 fuel to oil mix at present as engine is being run in after a rebuild, I would imagine this fuel mix could add to the problem.

[ob]

Absolutely.Get throught the break-in and see if she clears up.Anyway,make sure that engine as propped will rap out to the rpms I mentioned above or you'll be doing another overhaul sooner than expected.

[Clearsky]

Thanks again OB,Were just coming into winter here in aus, but next time I take her out I'll check that I can get the 5500-6000. I have only had the boat for a couple of months, I know I've had it up to 5000RPM but not sure if this was WOT, I think there was bit more in her, but I'll double check it.

[ob]

Cheers and happy boating.