Ready to change the gear oil in the (rear) differential - 73' F-250 CS.

We had it on the rack at Schuab's today - both wheels turn forward together = limited slip differential.

So, I purchased a new gasket at Napa for the 10 bolt cover, and not knowing how much gear oil to get, bought 3 quarts (plenty, I'd think).

I also picked up a $12 tube of limited slip additive. I know the newer Fords recommend it, but <b>is it needed in a 73?</b> ( I can get my $$$s back, no big deal)

And, <b>to what value should I torque the cover bolts?</b>

Any other tips 'fore I get started?

 

Use the additive. Dana 60's use 6 pints (3 quarts) of lubricant. Cover to housing 30-40 ft/lbs.