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The only things that's really important for the TC is to use a GL4 instead of GL5 because the sulfur content in GL5 damages the brass synchronizers in the TC. I used the manual transmission 75W-90 GL4...

I do think it was a bit underfilled by a quart or so. I drained a bit over 6 quarts in the initial drain and pan drop. I added ≈6.25 quarts once everything was installed and when I started the truck and pulled the drain plug, no fluid came out. I needed to add another quart or so before I...

They make great long life/severe duty fluids, for sure. I did an Amsoil severe gear in my diffs and transfer case at 5k miles and was amazed at how much metal shavings were on the magnets and in the fluid. I'm happy I took others advice to change at 5k after the break in period. Thanks for the...

*Disclaimer – I will not be doing a detailed step by step so if you lack appropriate automotive maintenance experience proceed with caution. This is my write-up of a transmission pan drop and an (almost) complete fluid change on a 24’ TRD Sport. I’m doing this at 25,000 miles. My rationale for...