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Discussion Starter · #1 ·
Just wondering if the transfercase uses the same oil as the diffs? Also, how much oil do the front and rear diffs + transfercase hold? This is for a 04 RR.

Thanks
 

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LEGACY VENDOR
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Re: Transfer case oil, is it the same as the diff oil? 04 RR

Somewhat predictably the NV225 transfer box uses a unique fully synthetic fluid developed by New Venture Gear & Castrol especially for this transfer box – it’s called Castrol BOT 26 FMB1 and the Land Rover part number is STC4861.

The front & rear differentials require a 75W/90 API GL5 oil although, bizarrely, Land Rover actually specify a different fluid for the front & the rear! The front diff. uses Castrol SAF-XO (p/n TYK500010) and the rear diff. Castrol SAF Carbon MOD Plus 75W/90 (p/n TYK500070).

Capacities are :

Transfer box = 1.0 litres (dry), 0.95 litres (refill)
Front differential = 0.8 litres (dry), 0.75 litres (refill)
Rear differential = 1.2 litres (dry), 1.0 litres (refill)

Phil
 

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2002-2005 Range Rover MkIII / L322
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Re: Transfer case oil, is it the same as the diff oil? 04 RR

Gents, any idea why the dealership would charge me $259 per diff for a "Differential Service"? Does anyone know if this entails more than just a fluid swap, and an inspection of the drain magnet for shavings if such a thing exists on a L322?

Unless the fluids are putatively expensive I gotta think there is more to this service than just a fluid swap.

Thanks!
 

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Gents, any idea why the dealership would charge me $259 per diff for a "Differential Service"? Does anyone know if this entails more than just a fluid swap, and an inspection of the drain magnet for shavings if such a thing exists on a L322?

Unless the fluids are putatively expensive I gotta think there is more to this service than just a fluid swap.

Thanks!
Dealer charged me $260 to do BOTH front and rear diffs.
 

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2002-2005 Range Rover MkIII / L322
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Other than getting a large hex wrench (which I made from an old bolt for free), it's only a 10 minute and $20 job. If they are leaking it would be more...but I assume the dealer prices would be MUCH higher if they were actually leaking.

The term highway robbery comes to mind.
 

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LIFETIME CONTRIBUTOR
2002-2005 Range Rover MkIII / L322
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I note that neither if the diff oils mentioned by RRPhil are lusted on the Australian Castrol website. Castrol’s Australian site recommends Transmax Axle Long Life 75W-90 which is a GL5 oil. The product data sheet says it’s specially designed for BMW final drives.

Is it critical like the transfer case?
 

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L322 - 2005, 2006 na, 2012 sc
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My rule of thumb is if it's an open differential, use any quality synthetic GL5 lubricant with recommended weight - It's just gears, no snake oil needed. Anything with clutches, such as locking differential, transfer case and transmission - Use only manufacturer recommended lubricant since the clutch packs have been designed and set around whatever special properties, such as friction modifiers, those lubricants have. Anything else is a gamble if those components will tolerate a different oil and usually how you find out they don't is through destructive testing.

Regarding the 2003-2005 Transfer case, the New Venture Gear 225 doesn't use clutches. It uses a torsen center differential. Technically it's an open differential, amazing design. I don't know how finicky it is toward oil formulation.
 
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