Front diff oil
#3
Welcome to the forum. Using heavier oil to quiet noise is a used car dealer trick. It's like a doctor using a band-aid to cover a bullet hole. If it's only noisy in 2 wd search the forum for 4x4 noisy in 2 wd. Specify whether 3 or 4 button system. If the noise is constant, as Brian mentioned, make sure it's full. Low levels cause bearing groan.
#4
it's a 96, it moans when it's cold, cold here is 32 degrees, but it will moan until it warms up even if it's 50 degrees out. I am just trying to find a temp fix until I can afford to have the diff rebuilt
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