Mine looked essentially the same as yours at 32,000 miles when I first took possession of it.@MolaKule Do you recall how the factory oil looked in the front diff of your Frontier? I drained/filled the front on my 2022 Frontier yesterday @ 44200 miles and the factory gear oil looked golden and clear like new oil, but the magnetic drain plug had quite a bit of paste and fines on it. Only about 3/4 of a quart drained out. Over a quart went back in. I again used Supertech 75w90. The newer Fronters use 10mm hex sockets for the plugs w/ aluminum crush washers. They were in TIGHT.
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I had the front diff oil replaced two years ago and this time it came out as clear as it went in, no fuzz; milege is currently 102,000.