Originally Posted by AlanAZ
You're in Toronto. The 0w30 will provide better cold start and cooler running protection than a 5w40 for the long, cold winters. If you lived in a hot climate, AZ, FL, TX, then the 5w40 might provide better summer protection.
Well I need to do an oil change now so I think I'll just get the oil at a dealer. We have a BMW Dealer sponsor over at Maxbimmer that provides us with great pricing. I think it was under $7/L. Not really sure to find the 0w30 stuff here in Toronto. I've checked Canadian Tire but they only have the 5w40 Castrol Edge SPT for over $11/L