Engine Oil

[V Patterson]

5.7 2021 Ram can I Use 5/40or0/40 oil For Longtivity??

 

[CRS1968]

There are about a million oil threads.

 

[pacofortacos]

Probably 0-30 would be a better option, with 5-30 as a good summer/towing option.

Unless really working the truck hard all of the time, the 40 weight is a bit heavy, IMO.