Changing oil in foot of boat motor

[Tarponjim]

The extra hole is not lube, but exhaust.  I talked to Lees Marine about it on my older Johnson.  He said it was common and nothing to worrry about.  My 150hp Yamaha take over a quart in the lower unit.  I also keep my motor vertical while pumping it in.  I just sit on the floor and pump away until it comes out the top hole.  You are NOT supposed to reuse the little washers on the top and bottom screws.  I replace mine each time I do the lower unit oil.  I buy a half dozen washers at a time.  About a buck each, but cheap when you think about cost of a lower unit, it is cheap insurance.

Thanks Scott, where do you buy your washers for the drain plugs?

I get those washers, the pump, the oil, and everything else I need for maintenance (filters, etc) on my Mercurys from Amazon, on my door in a few days.  Or, call Lee's and he will ship.