Patman
Staff member
One thing I have been curious about for a while now is how much of a difference is there in the cold weather performance of an oil once you put a few thousand miles on it. I’m speculating that the base oil plays a big factor here too. But generally speaking, would a 0w oil still be a 0w oil after 10,000 miles or would it be more likely to degrade enough that it would only test as a 5w oil?
It’s too bad that the oil analysis labs don’t also test the cold cranking on used oil. For people who live in extremely cold climates that would be valuable information to have.
It’s too bad that the oil analysis labs don’t also test the cold cranking on used oil. For people who live in extremely cold climates that would be valuable information to have.