m1 0w40 is good for everything in any temps if you ask me. but its not always available at a decent price here. i do love it when i can get itI run the 0w40 m1 in my 4.8 LS truck engine. I think it's a good choice in there engines and I was able to buy it for $30/5L jug (Canadian) so I had a small stash. Finally ran out and Pennzoil euro 5w40 is going in this weekend for a change. That's what was on sale when I needed it.