Guess all has been said already here, but here is my quick feedback:
- Good diesel can easily live to 10,000 hours if well maintained
- I'd prefer a younger diesel with 4,000 hours over an old one with 2,000 - diesels like to work
hard and what usually breaks first are all kind of soft parts
: gaskets, hoses, sensors etc. and neglecting these can generate serious mechanical issues.
- serious charter companies and private owners should have copies of the bills paid for parts
and many also maintain an engine maintenance log - as I do.
- Surveyors are important in the process, but if you have concerns about the engine, a special engine survey
is needed - this is, in most cases an additional cost paid to a mechanic surveyor
- In the purchase contract
you should reserve the right to walk away and have your deposit back should a serious issue has been found that has not reported in advance - or if you prefer, reduce the repair/replacement cost from the final price.
And... boats are not only an engine - at least for me.... The survey should thoroughly examine the structural condition, rigging
, other systems, deck
, fittings etc.. - some of these areas could cost you more than an engine in case of serious failure...
Yet, the survey cannot and will not find everything... be prepared to spend at least 10-30% of the purchase
price in additional costs for repairs and upgrades. With old, poorly maintained boats such costs can easily be higher than the purchase price...
Best of luck