AH64ID
TDR MEMBER
actually its quit simple. folks on the internet complicated it. theres one fluid for all 2500/3500 trucks with BW 44/46, 44/47, 44/48 (new HD version on HO cummins). its red and the mds specs are very near the same as atf+4.
From that aspect yes, it’s not a bit deal.
From the point of using 44-44 fluid in other than 44-44 transfer cases, and then putting 44-44 on both bottles they made it more confusing than it needs to be.
They should spec ATF for the HD trans and $$ BW fluid for the fancy 1500.