For this application, I'm of the mind "more is better" when it comes to warm viscosity. That being said, I have never seen as wide a range of options as are presented by Crewe for this specific application, and without any explanation (that I was able to find, anyway) for choosing among them......W140 is indeed a very high viscosity warm, in my opinion too much
Great, thank you very much.I'd go with EP 85W-140, which is one of the options.
See Chapter D of IETIS, it gives a long list of options from multiple brands for the final drive unit (AKA differential).
Not for the 1990 and later cars, at least not through "official channels." Bentley has yet to make IETIS available for the 1990 and later cars. There are tons of bootleg copies out there, though.every workshop manual, the latter is available online.