I have a new merc 25hp stroke, I ran it two weeks ago for the first time. Several days later I noticed a small amount of oil on the floor (several ounces).I then ran it again exactly a week later and again several days later (today) I noticed oil on the floor this time it was a significant amount (probably about 1/4 of a cup). I inspected the lower unit and found oil around the prop and skeg. I have no idea where this oil is coming from and appears to be very black in color. I have gone through the owners manual but nothing is ever mentioned about leaking oil on first usage. My friend suggested it is release of the high ratio 25:1 fuel mixture oil that is used in the breaking in process. I myself have no idea?
