In Ottawa Canada, I can get Mobil1 0w30 or 0w40 at:
Esso Warehouse (Imperial Oil Canada)
1961 Merivale Road
Ottawa (Nepean)
(613)723-2533
You must buy a case of 6 (1 litre bottles). I think I paid $6.25cdn/litre ($37.50cdn/case). In Toronto, I'd check with Imperial Oil Canada (Esso).