What oil to use in the Dana 60 rear end?

[Roger 68 charger]

I am going to change the oil in the differential and was thinking of using Synthetic gear oil. Has anyone had problems running synthetic oil? Thanks for the help!

[c00nhunterjoe]

What carrier is in it?

[Roger 68 charger]

Its a Dana 60. The rear end has not been rebuilt as far as I know. Im thinking of just going with 80 -90 and a limited slip additive. I was just looking to see if a synthetic oil would be better. With all the new oils out there it seems like everything is going synthetic.

[cdr]

Its a Dana 60. The rear end has not been rebuilt as far as I know. Im thinking of just going with 80 -90 and a limited slip additive. I was just looking to see if a synthetic oil would be better. With all the new oils out there it seems like everything is going synthetic.

I use 85/140 non synthetic Lucas in my S60 Dana, that is what Strange engineering recommends 

[Roger 68 charger]

Its a Dana 60. The rear end has not been rebuilt as far as I know. Im thinking of just going with 80 -90 and a limited slip additive. I was just looking to see if a synthetic oil would be better. With all the new oils out there it seems like everything is going synthetic.

I use 85/140 non synthetic Lucas in my S60 Dana, that is what Strange engineering recommends 

I will look into that... Thanks

[c00nhunterjoe]

If it is a 60 year old limited slip, i would run 85/140 conventional.