Can i use a #2 grease in my Milwaukee 0724-20 v28 drill? and how about my Dewalt 12v dw972 drill? The Dewalt uses some plastic and i am not about the Milwaukee. Would regular grease harm plastic that are in some drills? I have chevron delo # 2, Amsoil Synthetic Multi-Purpose Grease NLGI #2, and Mobil 1 #2 grease available. can i use any of these in them sparingly? or am i better off using Milwaukee brand grease in them?