Pbalin: I shifted in and out of 4 wheel drive thinking that maybe it was partially engaged or something but the problem stuck around. I am sure it's not locked into 4 wheel drive but i know what your talking about when it is.
Gorgeguy: I think your probably right about this one. It makes sense and that is probably why the dealer's mechanic told me to change the oil every 15k. Have you heard of anyone using synthetic in the differential? I will check the owners manual to see what is recommended.
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