Just curious if anyone on here knows what this spec means. The OM for my Caravan says to use API-certified engine oil that meets Chrysler MS6395 and of 5w20 viscosity. I have noticed that some brands specifically state on the bottle that they meet it and others don't. I'm assuming that there are probably several oils that meet the spec and just don't list it. I'm long out of warranty so it isn't important for those purposes but it just strikes my curiosity. I can't imagine the decades old design 3.3 liter requiring some high tech oil spec. Does anyone know what the spec means or if it even matters?