2013 SHO PP RDU fluid

[Ohitsreggie]

looking to change the fluid in the RDU tomorrow. Dealer says it takes 2.4 pints. which is adorable. At and rate, what 80-90 do you recommend? safe to assume a full synthetic is what im looking at? The dealer was not very helpful...

 

[BamSHO]

I run Royal Purple 75w-90 here. I always put in a drain plug in the rear diff cover to help with fluid changes.