Diff is GL-5
Tranny is GL-4
don't thing that the GL-5 is an upgrade to 4, it has different additives in it for the syncro's vs the limited slip friction modifier. tim

1941 Taylorcraft
1968 Charger
1994 Wrangler
1998 Wrangler
2008 Kia Rio
2017 Jetta

I didn't do 4 years and 9 months of Graduate School to be called Mister!