Up-date,i split the diff in halves-had to so i could retrieve the inner part of the broken axle-nice and clean inside both halves.took the broken axle to a local engineer and he machined two flats on each end of the failed section -made up a sleeve section and using super lock,pressed sleeved segment onto both ends of the axle(broken section)then drilled and tapped in grub screws.now i have a complete axel again.put the axel back in and put the two halves together with gasket gue and let it sit over night.the correct oil is 20w40 but i need to find out how much to put in the diff.
i have taken photos of the diff and axle in halves so i will post them soon...ken