Yanmar 2QM15 - how long will they live?
I'm buying my first sailboat, and it has a 30 year old Yanmar 2QM15 RWC diesel.
The boat looks pretty clean and pretty well maintained. It's hard to say for sure, but I get a good feel about the boat itself.
I do have some concerns about the engine though, largely because my whole life has been spent on shore; salt water is a thing to keep away from motors, not a thing to pump through the middle of them!
The overall visual appearance of the engine looks like what I would expect a 30 year old marine engine to look like. There's a bit of foamy corrosion around a couple of fittings and a wee bit of surface rust here and there. There has clearly been no attempt to clean it up to hide anything.
Overall it looks .. 30 years old.
My problem is that if this does bite the dust, I'm looking at paying more for a new engine than I paid for the whole boat, to say nothing of the initial problem of trying to SAIL into my slip!
So, what's a reasonable life expectancy for a 2QM15?
And is there anything obvious I should look for before going to the expense of a proper mechanical inspection?
Thanks for any thoughts.