In the extreme cold, I see widom in allowing the engine oil to circulate a bit. By that I mean, a minute or two seems prudent. Driving easily until full engine temps is also prudent.
Lastly, in very cold weather, a clean quality synthetic is a must. Personally, if I lived again in NE, I would use 0W-30 syn in winer. Then again, if I lived there again, I would start drinking heavily again!
