I own a 2019 Jeep Grand Cherokee with the 5.7L Hemi. It has only 485 miles on it . I have not driven it due to being ill and the Covid-19 lock downs. I have had the vehicle for almost 1 year. My question is should I change the factory oil that came in it because of the age or is it alright to put some miles on the oil, before I change the oil and filters? Also I have been told by several people that say they have heard that Mopar is saying to not use synthetic oil in that engine, is that true or is it just urban legend?