rear end gear oil?

Well, what type do you recommend? how much? Use black RVT to seal it back? 1984 350 2wd 4 spd.

any sythinthtic(wow I can't spell) type and rvt is fie as long as use let it dry and don't over torqe it.

thats what i was thinking. any one better than the other?

i use valveoline because that's what napa brings me. and never had a problem

valvoline with gasket and "the right stuff"

I just redid a rearend on my kids pu where all the guy used was rtv red.