A common misconception, but 0w-40 is actually thicker than 5w-30 at both cold and hot temperatures, about 25% thicker overall if you compare the viscosities. So with your logic 5w-30 would be better in the cold. I would go 0w-40 personally.
It does, and 0w40 is perfectly fine to drive on even in the winter...just that for your use case it won't really matter or make a difference over 30. It might offer a tiny bit extra protection, but not much especially compared to the same exact oil but in a slightly thinner viscosity. Either are fine to run.
The 0 or 5 won't make any difference. The advantage of the 40 weight (I hate that term) oil is better cam control. Some speculation is the Ford recommended 50 weight for the Boss and track engines is for cam control and not protection.
if you don't actually look at the MSDS for the # CsT@YY, relying on AwB is just silly. The dumbed-down shorthand for the uneducated consumer has no real standard.
you mean back in 2012 wth the 1st gen Coyote? Or when Ford changed their "recommendation" in 2018 for CAFE cheating, and then changed it again back to w30 in 2021'ish?
You will not notice a difference in how the car drives or feels as it relates to cam timing from phaser action due to oil viscosity lol. That I can guarantee you.
Not correct. Ford did not "go back to 5w30 in all coyotes". Engines that work hard, sure, use 30w, 40w, or 50w. But a daily driver that rarely goes WOT -- 20w is MORE than enough.
