how much oil does the front and rear diff hold in our trucks?

I need to drop the covers and replace the oil. I've never done it and as far as I know the previous owner never did it either!

 

Front is 6.5 pts. (3.1L) page 2-75 1993 d & w manual.
Rear is 7.0 pts. (3.31L) page 3-50 1993 d & w manual.

 

It's in the sticky...

https://www.dieseltruckresource.com/...1&d=1210280772

If you have the limited slip diff, don't forget your additive in the rear. Drain your oil into a pan, then slowly drain the pan into a container. Look for metal shavings, chunks, particles. Tells you a story of the condition of the axle.