This is why I change my own oil...and also because it will be a cold day in hell before I pay $180 for an oil change. Similar to the SCR system and the type of DEF you use, the engine cannot tell what type of oil you are using...nor does it care. Of course if you want to stay within spec you should use Mopar or the Euro L, but my father has been putting 10-40 in every vehicle he has ever owned with no issues. I'm not suggesting this but the simple fact is that engines just want to be lubricated, yes they are engineered with a certain viscosity and weight in mind but they mostly don't care what the product is. I cannot imagine your engine will have any issues with stuff that wasn't technically specified...especially since Mopar did it anyway. My local dealer doesn't even sell Mopar branded oil...they use the Pennzoil Euro L for $6.60/quart. Cheapest I have found it.