I am new here, been lurking for a while. I just picked up a 2000 F-350 7.3 Diesel 4X4 Crew Cab with the 6 speed manual transmission. I was told this transmission and transfer case takes ATF fluid and not normal 80/90 weight gear oil like most manuals.
Is this correct or was I told a bunch of BS, this just does not seem right. I have had Toyotas and VW manuals and they all took normal gear oil in the tranny.
I want to put the best fluid in the transmission. What do you all recomend and how much do I need to get to do a complet change.
Thank you all very much for your time and help