Terry,
I just recently went from using Mobil One ATF in my LT77 to Red Line MTL and was really pleased with how much better the transmission shifted. I was in a conversation with a number of blokes on one of the UK Rover boards and was told the primary reason that Land Rover recommended ATF for the manual transmissions (LT77 & R380) was to make it easier on the blue haired ladies driving their Rangies on cold winter mornings. I did a little research only to find that Land Rover changed their recommendation of ATF to various MTL's back in the late 1990's. The Red Line MTL came highly recommended so I gave it a try. The difference was like night and day. Keep in mind that with all the stuff I've done to my truck the only thing original is the LT77 and with just under 120K miles on it I have my fingers crossed hoping to hold off a rebuild a little while longer!
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