I live in Montreal and its so cold most of the year we need a synthetic oil that works well in the cold. I've tried every oil know to man and it just gets too cold her for most of them to work. Is there any Amsoil product that you know of that will work up here because I'm spending a fortune on oil changes and half the time, my truck won't start anyway. Where in Canada can I find some oil that will work no matter how cold it gets?