sisu diesel engine.
The Sisu diesel are very robust and longlived engines.
Has their root back from Bolinder tractor engines.
And then in Finland as Valmet/ Valtra. today Sisu, also tractor and marine use.
The engine can be compared to types as John Deere, as robust and most respected marine diesels.
In Scandinavia ofte sold in smaller fishing trawlers, and also as continiusly working gen-sets, wanted because of their low noise soft running, and troublefree working over many years.
Often sold from Scania dealers, as their smaller HP. range.
Service here in Europe i believe, are second to none.