i did look into the drill motor rating and it is 3000 rpm. i doubt it is turning that fast loaded by the oil pump but even at half that rating say, 1500 rpm , that is 3000 rpm engine speed. and to only 40 psi with cold oil concerns me. just looking for a response from someone with experience using or trying a standard type pump. btw the machine shop told me to run it with the standard pump and see what i have. that makes me uncomfortable.