Hey All, Just picked up a new 2017 Expedition with Ecoboost and it calls for Ford WSS-M2C946-A, which seems to be 5w-30 only. I want to run 0w-40 but it seems none of them carry that cert so I was curious if I would be superseding the 5w-30 cert with WSS-M2C937-A? I have looked all over and can't find anything on it. I run 0w-40 in my BMW 335 (twin turbo) and it does great so I would like to stick with it in this engine too but don't want any warranty issues. Thanks!