Maintenance and Refit
How often should engine oil and filters be changed?
In marine engines the interval is set by time as much as by hours: in a lightly used engine acid and moisture accumulate in the oil, so it should be changed at the end of the season even if the hours have not come round.
Why it works this way
Fuel filters may need changing more often depending on water and microbial contamination in the tank. The maintenance record is later compared against the engine’s real history in a survey.
Related services
Serkan Kotel · independent yacht surveyor · IIMS · ABYC · MCA
