A friend wants me to get some Amsoil products for his 97 F250 4x4 powerstroke. Anyone know what the diffs, transfer case, transmission (auto) and engine hold? thanks in advance.:)

In my Amsoil dealer selection guide it states that he will need:

Engine - 14 qts
T Case - Between 2 and 3.5 depending on the model TC. And 6 with a PTO.
Front Diff - 2 quarts
Rear Diff - 4 quarts again depending on the model diff it could be different.

Ken