how much atf does the 4speed from the 99 hold

 

do you mean on a single drain and refill?
or to change out all the fluid?

about half the contents are stuck in the torque convertor while the rest can be drained

99 owners- how much is that?

I only know the 5 speed takes up to 3.4 qts on a single drain and refill
Yours should be the same or slightly less
Always measure the amont drained!!
use Honda DW-1 fluid