The Grease that is shown at Autozone is the same Grease packet that comes with the Dorman Boot Kits.
3 ounces is not enought Grease volume.
When I rebooted my Cardone Rebuilt Axles I used the Contents of 5; 3 ounce Grease Packets on 2 Axles (4 re-boots with Dorman Boots and Grease).
And, I left as much of the original Grease in the Axles.
If the Axles had previously been filled with Oil I would have needed to use even more Grease.
If you can find a pic of the Astoria Bootk kit you will see the grease Packet is about the same size as the whole Boot.
Also the Dorman Boots come with a different type of Clamps than the Astoria Boots and it takes a different type of Clamp tool.
My Axle Boot Thread; remember I used Dorman Boots in this thread
http://www.peachparts.com/shopforum/diesel-discussion/317950-cv-boot-installation-problems-dorman-pneumatic-cone-type-boot-installation.html
You might ask this Member how much Grease is needed>
http://www.peachparts.com/shopforum/diesel-discussion/251168-flexx-boot-axle-repair-using-cone.html