xterrascott,
Unfortunately I have a slushbox in my Xterra, but in other vehicles, I've used RedLine MTL and MT-90 with success. That includes the Rovers which have many more "soft metal" bits than modern trannys. I've had no cold shift problems at all. Both of these fluids are safe for the GL-4 recommendation...
Bogatyr
_________________________
2001 Nissan XTerra XE 40k
1984 Honda CRX 1.5 83k
1970 Land Rover IIa 88" 41k
1966 Land Rover IIa 109" 35k