What kind of gear oil for 8 3/4? Why not synthetic gear oil?

Shainesboostin said

Mopar guy here uses REDLINE shockproof and has also used royal purple, but says Redline is the stuff!

Click to expand...

Chrysler recommended that if u do heavy towing to change to synthetic in the 02 ram w/ a dana . That tru trac flat wouldn`t hold in a ford 9" in my 406 vega w/ 14 1/2 x 32 slicks on it , ended up w/ a full Detroit locker. jfyi