Are All Trasmission Fluids Created Equal?

just looking at the F service guide under severe duty & it say no tran service on E 40 D which u should have in a 2000. severe duty consist of high speed (ha ha) towing or carrying heavy loads thats us.

Sorry just read where the E40D went out in 98 or 99 so u do have the 4r 100, so not sure abt ur sevice time