I had a clunking that felt like hesitation/binding but only while turning sharp and accelerating, such as pulling out of driveway or taking a free right on red. Thought maybe it was suspension. I changed the tcase fluid with Redline MT-90 75W90 GL-4 Gear Oil and it was immediately fixed. I assume I had a factory fill, which was over 110kmil old. Don't use GL-5 fluid, even though the bottle will say it's compatible. GL-5 is designed for gears only, not clutches. It's too slippery for the clutch. GL-5 is great for open diffs.
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