Change filter every year.
I do my oil changes every other year but I do change my filter every year and top it off.
Mercury decreased the filter housing size on my 496 so I went to the filter from the 500hp which is huge, twice the size of the current OEM.
The larger the filtration surface the better the filtration and smoother less restricted oil flow this equates to better lubrication.
Also you cannot compare a boat to a car unless you run the boat at low rpm’s all the time.
My boat generally operates at between 3500 and 5000rpms and usually at or above 4000.
Most cars operate efficiently around 2000-3000rpms while my diesel truck is down under 2000 most of the time. Boats run at higher rpm’s so the wear and tear is much greater than that of automobiles.
|