Originally Posted By: Garak
Checking back at the PQIA tests of the conventionals, they're all pretty darned close, with Petro-Canada's being a standout. At 0 F, though, you're splitting hairs and I'd use any reputable 5w-30 without concern.
This^
Petro-Canada has excellent specs but if not obtainable, any of the major brands will do just fine, as crazyoildude mentioned as well.