do NOT use gear oil in the transfer case. The fluid that these units take is sold by the dealer in 1L bottles (you'll only need one) and it contains special friction modifiers that smooth out the clutchpack engagement. It's not cheap at about $50-60 per bottle, but using any other fluid could cause some issues.
| PROcede Rev3 | Vishnu Meth | DCI | BMW Perf. Exhaust | AR Coated/Catless | CP-E FMIC | Quaife |