Vee_Que;12529 wroteYou need a male socket.
My real world testing disagrees with you, 80,000km of it, the changing is more important. Anything synthetic and 10w-40 is what you want. I used to even run 10w40 diesel spec oil for 20,000km.
I changed oil & filter at 5000km regularly. There's over 200,000km on both engines so I guess we're both right ;-)