I am in the process of rebuilding and installing an 8.8 rear axle assembly in my 85 GT. I will also be using a TA Girdle. What will the lube capacity be with the new cover? Also, I have 4 quarts of Amsoil 75W-90 that I was going use in another vehicle, but now hope to use in my GT. Is this a thick enough lube for my new setup? Any opinions would be appreciated. Thanks in advance.

 

should be around 2 quarts lube capacity.

Use whatever weight Ford recommends..