So, i wanna drain my rear end and put some royal purple in it. if all im doing is draining it and refilling it, would i need anything besides the 3 qts of oil? like gaskets, etc??

 

i believe it calls for two bottles of 75w-140 synthetic gear oil and friction modifier for the trac lok. You can use a differential cover gasket, but most people generally just run a line of silicone gasket sealant around the cover instead.