Time for my 45K service and have read good things about Swepco 201 80-90 for the gearbox Called SwepCo Corporate at 800-877-9372 to find no retailers carry it for tri-state area. You can order a case (6 1gal containers) at $164+tax s/h incl from the local SwepCo rep :Bob Dilutchi (sp?) at (732)505-8771. No affiliation, yada yada.
CLYDE - Use REDLINE synthetic for the gearbox. It is absolutely the best!! My 308 was extremely notchy and a royal pain in the arse to drive when I first got it. After switching to REDLINE, she loosened up very nicely and shifted much easier. My TR now has redline synthetic in her diff/tranny. Best of luck with the rest of your 45k!!!
My case of oil finally came in. If anybody want some, I have 5 gallon containers for $30 each (no profit here), you pay shipping or pick up in Passaic Count. e-mail if interested.