burbanator

I have a 2002 Chevy Suburban LT with Autoride. I am getting ready to drain and refill the transfer case. Are there any apecific fluid recommendations? I have used synthetics for 30 years in all of my motors and am convinced they are worth the extra few bucks when it comes to engine longevity. How about a synthetic recommendation for the transfer case ?
Also I have been using the Lucas line of products for over 10 years in my trannys. Any comments on these products. I had a 1994 Bonnevilethat I sold to a friend that is still going on the original tranny with 180 K miles that had been serviced with Lucas tranny additive on at least 3 occasions. The wife has a 1996 Grand Cherokee with 150 K that has had the same Lucas product added on at least 4 tranny services. If you're a Chevy fan, I apologize for the Jeep reference.