Proof that Oil and Water Don't Mix

As variety is the spice of life I've decided to have a little break from the engine rebuild. So I set about removing the dash panel and battery tray ready for prepping the gearbox and axle for painting. I'm using a range of wire and abrasive coated nylon brushes in an electric drill to remove most of the old paint, muck and corrosion. Whilst tackling the steering box, water started to run from the bottom of the steering box casting. After about 200ml, the water changed to oil which in turn changed to a thick orangery sludge !
As can be seen from the first photo, note the running water !
Having allowed all the oil to drain and pushing out the sludge using a air pressure, I was left with a small hole in the ally casting. Interestingly this had showed no signs of leaking prior to me removing the old paint. I guess the oil is under no pressure so a bit of paint was sufficient to prevent any leaks. The hole can be clearly seen in the photo below.

Options for repair are either remove the steering box and take a trip to the welders or, fill the hole with a liquid metal or epoxy adhesive. I decide to go the epoxy route for both speed and cost. If paint stopped the leak then providing the surface is well cleaned epoxy should in theory have no problems.
Just visible in the third photo is the repair. I've decided to fill the steering box with a semi fluid grease instead of oil on the basis that this should limit any leakage from the steering arm seals. Hopefully the epoxy repair will hold and once painted won't be visible.