Re: what causes water to get into my 2002 115 hp Mercury outboard4 stroke oil sump?
How much water in how long a period? Running a cold engine will build water over time as will extended low speed.
Cracked head/block , leaking head gasket, oil pan seals, gaskets and grommets can build water quickly. Merc 4str. has suffered from all of these at some point.....
