Transfer Case (4WD)
WARNING: This page is about a different car, the 1994 Isuzu Pickup and 1994 Isuzu Amigo. However, it is still accessible from the selected car via links, so may be relevant.
Use SAE 5W-30 SF engine oil at ambient temperatures less than 90°F (32°C). At temperatures greater than 90°F (30°C) use SAE 20W-40 or 40W engine oil.