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Well, I can't find the Motorcraft gear oils around here so it looks like I'll be using Mobil 1 Synthetic 75W-90 in the front and 75W-140 in the rear. The Mobil 1 website says you don't need to add friction modifier to either of these gear oils, but mentions that you can if you deem it necessary.
Also, I'm planning on using the Felpro gasket on the rear. What's the deal with putting RTV on the gasket?
I'm also going to change the ATF in my transfer case with Mobil 1 Synthetic ATF.
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