This 36k run was using Redline MTL. At the time I changed this, I actually refilled the trans with more MTL, but added 1 ounce of Ford Motorcraft XL-3 friction modifier (trying to eliminate the parking lot groan from the LSD...really annoying). This eliminated the noise but made the shift feel in the cold very poor, so I actually re-drained and filled with straight MTL again today. An expensive lesson. I'll live with the LSD noise.
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