Hi all, Just picked up a 2015 GC with the 5.7 hemi. I have been doing a lot of reading. From factory it calls for 5w-20 and I see a lot of debate and conflicting infor about running a 20 vs a 30 weight oil due to MDS. I do know that a 20 weight can infringe on the territory of a 30 in thickness. So is it true a 30 weight will cause issues with the engine? Around town/highway in sport mode I notice the oil temp is around 230 and out of sport mode it is around 205-210. What is a thicker 20w oil or a thinner 30w oil? I just did my first oil change and used Castrol Edge black botte in 5w-20. And found out that it came from the factory with the wrong dipstick lol.