oil types

Hoping someone casn steer me right. I have a 2018 Cherokee AD II with the 3.2. In the owners manual it says to use mopar shell helix or pennzoil that meets MS-6395 in 5W20, I'm trying to figure out if there are any oils that are conventional, specifically pennzoil (as that's what my dealer...

How is everyone? Usually, i use Full Synthetic every 5000 to 6000 miles. This time I used the Penzoil Full Synthetic 5w30 with Dexos. I have read nothing but rave reviews for this oil. I must say however, I am not impressed. After only 1500 miles, my oil change notification has come on...