Steve Wheeler from HHB Marine in Hampton, New Hampshire shares a method of making a repair to a leaking marine oil pan using J-B Weld, an old can and some other basic tools. This repair is intended to serve only until you can “get home” and get the oil pan replaced. So that we could actually show the steps, instead of just write about them, Steve hung an engine on a lift and performed an actual repair for this sequence of photos.
An inspection mirror allows you to better see what is going on.
Savvy boaters use a small screwdriver or awl to probe their oil pans. Solid metal can’t be punctured this way but if you did produce a hole at the dock, you would have likely saved yourself from a leak (and possible engine damage) out on the water.
After finding the leak, clean the pan of as much rust and loose paint as possible using a wire brush or sandpaper.
A wire cup brush, chucked into a drill motor, is an excellent tool for removing rust and loose paint.
Apply a degreasing agent or parts cleaner. Lacquer thinner or even soap and water can be used.