I've just been doing a bit of reading about Patrol lsd. Re..lsd clutch pack shudder. Here's what you do. drain out 500ml~ of oil from your rear diff, add some Nulon engine cleaner (or different brand), drive for 1000klm (doing figure 8s on soft ground from time to time). fully drain and replace with 85w-140 limited slip diff oil. should restore diff.
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