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Well I'm slowly getting ready to do more work on the truck, since having the oil cooler/egr cooler, turbo cleaned, and new egr valve since the old oil cooler crapped out, luckily warrenty took most of the bill.
Since getting that stuff done I'm planning on working more. I'm getting ready to change out the external transmission filter, transmission fluid (probably not getting all out), changing the transfer case fluid, and also front and rear differentials.
I can get the external filter for the transmission at my FMC or dieselfiltersonline.com for the fluid should I get the Motorcraft SP transmission fluid, or when I talked with NAPA when I got my replacement coolent filter they said the valvoline max life is the same as the SP.
What type of ATF fluid is everyone using for there transfer cass?
For the front diff I'm thinking of using 75-140 syn once I can find it and for the rear I've seen using 75-140 which I think I can get at NAPA