So I took my 04 RR to the trans shop today to have the 'lifetime' filled trans fluid changed. The owner of the shop, who has serviced mine and my family's cars for along time told me about this fairly new trans fluid that i had not heard of. It's called Wolf's Head 836-92866-56 Super Universal Synthetic Automatic Transmission Fluid. Steve told me he has used it in his VW which has a ZF trans and requires the Esso oil. While I was at the shop, he called Wolfs Head. Wolfs Head said the oil will work in the RR and it can be mixed with the Esso. The good news is the Wolfs head is about 6-7 bucks a quart. Steve did tell me the oil is red in color, not green like the Esso.
I am having a complete flush filter change done in my RR with the Wolfs Head fluid. I will give an update when I get the truck back and drive it for a bit.
The contact info for Wolf's Head:
There in Tampa Florida