i think i used the honda 5W30 on mine and it took about 3.5 quarts
as far as cold weather you should be fine with the 5W cause it is thinner then the 10W and not as hard for your engine to push threw when its cold. hope this helps
as far as cold weather you should be fine with the 5W cause it is thinner then the 10W and not as hard for your engine to push threw when its cold. hope this helps