I opened up the inside last nightm first oil drained outm and it looked bad, but not horrific, then as much water as oil followed. good thing the only thing I'm reusing in there is the housing itself. It'll clean up where I need it to. I'm going to try electrolysis rust repair on this axle, apparently marine salvage people use this technique a lot. leave the housing in a big bucket with a battery charger for a couple days, and see what happens.