Hi FB lady, the Perkins 6354 engine is regarded by diesel
engineers as the benchmark of industrial diesels, it's smaller sister the 4236 likewise. The secret as with any engine is TLC, service
it by the book and it will last well in excess of 30 yrs before rebuild, you can get spares at parts4engines.com (they manuf for Perkins) any marinising parts can be sourced direct from Bowman. A very very important tip for long life for all diesels, especially turbocharged is to let them idle for a minute or so before revving to get the oil
lubricating the turbocharger bearings, and idle around 5 mins after running, this allows the cooling
system to slowly relieve the thermal stresses around the combustion area before shutdown.