Transfer Case Oil - Options

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Originally Posted by 101RRS

Shell TF0870 Transfer Case Oil (DTF1/83222409710) - BM Direct, Sydney.

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Garry - as a follow up.

You will be pleased to know S-TEC have confirmed that OIL0002 (TF-753) has now been replaced by OIL0005 (TF-870).

So they have indeed rationalised to just the one oil type. Like Ravenol, it would still be a lower viscosity than the original oil, but otherwise could be considered suitable where TF-0753 is specified.

https://uploads.tapatalk-cdn.com/202...686e5f331d.jpg

Good to have confirmation from S-TEC. [emoji106]

Thanks - but I never had any doubts [thumbsupbig]

Quote:

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Originally Posted by 101RRS

Thanks - but I never had any doubts [thumbsupbig]

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I am impressed with how open minded you have become. [emoji106]

I remain sceptical with the Shell TF-0870 oil. Too many reports of BMW early transfer case failures, especially before they changed spec from Shell TF-0870 to BMW DTF-1, and likewise on the Porsche forums it is often reported transfer case slippage issues can be fixed by changing from Shell TF-0870 to Ravenol TF-0870/DTF-1.

Good reports on Ravenol and it seems to fix the BMW and Porsche transfer boxes of problems. Ravenol does use different additives to Shell TF-0870, seems to be more like Penrite BMV.

I have not read any reviews of people using the S-TEC BMW oil in the D3/D4, but that should change given that S-TEC is stating it now replaces TF-0753. So will be good to hear how you go in the long term.

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Originally Posted by DiscoDB

Just a quick update - found the MSDS for the LR Special Transfer Case Oil and can confirm the viscosity is:

32 mm2/s at 40degC
6.8 mm2/s at 100degC

By comparison the viscosity of Shell TF-0870 is:

28 mm2/s at 40degC
6 mm2/s at 100degC

Interestingly, the viscosity of ZF Lifeguard 6 is:

26.8 mm2/s at 40degC
5.6 mm2/s at 100degC

All three oils list identical hazardous chemical ingredients. The only difference between the 3 is the viscosity, the ratio of the hazadous additives, and the inclusion of any non-hazardous additives not listed on the MSDS.

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Looking into different oils for transfer oil and found the Penrite DCTF004 has literally the same viscosity as TF-0753

Volume: 4L
Colour: Clear Natural
Density at 15°C, kg/L: 0.851
Viscosity, Kinematic, cSt at 40°C: 32.0
Viscosity, Kinematic, cSt at 100°C: 6.8
Viscosity Index: 177
Viscosity, Brookfield, cSt @ -40°: 11,600
Phosphorus, Mass %: 0.016

Also Castrol Transmax Manual FE 75W
Is very similar

Density @ 15C DIN EN ISO 12185 g/ml 0.852
Viscosity, Kinematic 100C ASTM D445 mm²/s 6.3
Viscosity, Kinematic 40C ASTM D445 mm²/s 32.2
Viscosity Index ISO 2909 None 154
Viscosity, Brookfield @ -40C (75W) DIN 51398 mPa.s (cP) 10000

This is an old thread I know but just curious on your thoughts would it just be the additives arnt suitable 🤔