gear oil

I'm getting ready to drain a currie 9 inch rear end...

Fill back with 3 quarts of 80/90 sound about right?
Should i add any friction reducer additive?

You otta ask Currie......they sell 85W140 for their 9 inch assemblies....and require limited slip additive if the carrier is such.

mike in tucson

thanks Robot, just called currie enterprises, it's 3 quarts...