My experience with M1 0W-30 was not good. I tried it in a vehicle that had used M1 5W-30 since breakin. With the 0W-30 it started consuming a quart in about 5000 miles where with the 5W-30 it had used none over the same mileage interval. I went back to 5W-30, the oil consumption returned to normal (none), and I never bothered to try it again. IMO, unless you're in an extremely cold climate I don't see how 0W-30 would offer any advantages, and even then only in the coldest months...