Hi, Just changed my oil and looked everywhere for alternatives, there is none and only Landrover seem to know but won't tell you, in the end it was not that expensive to get from the main dealer
Ive had Ford IB5 transmission oil (WSD-M2C200-C) in mine for 6000 miles and its working perfectly. At 30 odd quid a litre and used to refill all Ford gearboxes its good enough for me...........working in a Ford garage helps too as it was FREE
Any decent motor-factors will sell what you need, Comma is a very common brand and list a suitable oil.
Personally I replaced the gearbox & IRD oils in my wife's 2006 TD4 with the ones from Difflock, I have used their own branded stuff in my R380 since new and like it.
does anyone know the procedure of changing the gearbox oil? i took the big and little hex bungs of and when i took the bottom big one off, there was only a teaspoon of oil that came out? is this right?