Last night I took my passenger side axle out (sadly with most of the cone washers still in, they wouldn't budge like so many things on my LC) and to my surprise gear oil came out of the axle tube and had been covering the bearings. I'm thinking maybe a previous owner filled the rear diff with too much gear oil; do I need to refill it or should I be ok? I have new bearing grease to repack my new bearings but this was a bit odd to me.