Transfer Case (B2600i 4WD & MPV 4WD)
WARNING: This page is about a different car, the 1992 Mazda Navajo. However, it is still accessible from the selected car via links, so may be relevant.
More than 50°F (10°C), use SAE 80W-90; less than 50°F (10°C), use SAE 75W-90.