Originally posted by svtman1999:
My brother and dad who farm run 0W30 in all their diesels in the winter as well as their vehicles - certainly makes for a much easier startup in the cold winter months! Even in my car the change from 5W30 to 0W30 is noticeable when it gets really cold, with 0W30 being the better choice for faster cranking. The car will start easily at -40C in a pinch with no plug-in 
How about that week a couple years ago we hit nearly -60C + windchill? That's what 0W30 is good for... didn't help my neighbor's car though, his door handle broke off in his hand! LOL! I just stayed home and told work to piss off.
