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I have 8K on my truck. Just changed the oil the second time to Mobil 1 5w30 Syn. I asked about the diff fluid, and the tech informed me that Titan did not call for Synthetic, and that the synthetic diff oil would cause a clunking sound. I doubted him, and he showed me the specs and warning. Now I am really confused.
Ron
LE, 4x4, Big Tow, Off Road, Lock Diff, Nav, Sun Roof, DVD, Gate Ext
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