As it happens I will shortly be replacing my diff oil. As I understand it LSD,s require an additive a friction modifier that in the past needed to be added to normal diff oil separately by the person changing the oil. According to GoMog if this is not done it would result in serious damage to a LSD within 1000 miles. This was the reason I contacted the dealers and MMC to try to establish which diff I had and what oil to use. As it turns out the oil the dealer uses is Castrol Transmax limited slip 75W-140. This oil already contains the additive but can also be used in none LSD axles so that is what I will be using.
Regards Tony
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