engine oil lands in bilge

[aquapore]

I have a Bav 41 with Volvo d2-55 engine.
I have just discovered the entire engine oil in the bilge under the motor.
The boat has been sitting idle for about 8 weeks.
It may be a corroded sump.
Never seen an oil leak before
We do get some rain water coming in.
Is this a known issue with these motors.
I will investigate further.
Appreciative any comments.

[Yngmar]

Pour some oil in and see where it comes out?

Some engines have a drain plug on the sump from their other life as car engines and that might've just come off.

[aquapore]

Thanks - I am cleaning up the mess. I will check that. No sense in being pessimistic.
However, I am unable to see but it feels like sandpaper.

Does anyone have experience in removing and replacing the sump.

[PEA-JAY]

Hi. For all the oil to leak into the boat it must be a leak from below the sump gasket. My D2-55C is fitted with a drain pipe to facilitate oil extraction from the lowest point. There might be a leak were it connects to the sump. Ideally you need to measure how much oil leaked. The engine including the oil filter takes close to 10 litres.