Transfer Case oil
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Straight from my 1993 manual. Page 0-9, it needs 4.5 pints=2.13 liters. Page 21-342- recommended lubricants for the Np205 transfer case include multi-purpose gear lubricants and single weight engine oils. Engine oil should be API classification SF/CC or SF/CD. Use SAE 30 at ambient temps below 0 C (32F) and SAE 50 at ambient temps above this point. SAE multi-purpose gear lubricants with an API grade rading of GL 5 are recommended for severe duty operation. SAE grades 80, 75W-90, 90, 80W-90, 140, and 80W-140 are all acceptable. Use SAE 80 or 75W-90 when ambient temps are below -23C (-10F). Use SAE 90 or 80W-90 when ambient temps is above the stated range. SAE 140 or 80W-140 can be used when severe duty is anticipated, or when ambient temps are expected to exceed 32C (90F). I put 75W-90 royal purple in my w250 axles.
Last edited by 921stgen; 06-12-2010 at 10:12 PM.
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