TRANSFER CASES ON 4 × 4s
All 4 × 4s have a transfer case. The maintenance of the transfer case is the same
as the standard transmission, unless otherwise specified by the carmaker.
Determine what fluid is in the transfer case and service it according to factory
recommendations. Transfer case maintenance is critical to its long and reliable
life. This maintenance involves changing the fluid at regular intervals unlike the
units of old, which could go for years upon years with the same gear lube in
them. Carmakers use specially formulated synthetic fluids to ensure optimum
performance, longevity and reliable operation of these units.