Here's my situation: Recently moved and park my car outside. I live in Central Montana, where of course the temps. in the next couple months will get well below 0. I am currently running M1 5W-30, and have about 5500 miles on this change. Going to change at 7500 which will be in about a month. I am looking at putting in one of the following for my next OCI (all M1): Keep with 5W-30 0W-20 0W-30 Or 5W-30 EP What say you BITOG'ers? I drive very short trips (about 5-10 minutes) each day for work and then 2-3 times a month an out of town drive about 550 miles round trip.