When I get my oil changed should I stick with Full synthetic or would semi synthetic work good too? I never go over 5000 miles between changes and never more than 6 months. I live in the North East if that makes a difference.
This is a 2019 Durango R/T with 49k miles at idle and at normal operating temp. Does this sound normal or is the ticking the classic Hemi tick or just the injectors? There is some oil seepage around the heads of the cylinders and the PCV valve area. Oil level still good and not overdue for oil change. Runs 5w20 Full Synthetic. It also has some oil on the engine air filter, not sure how as the air box feels dry top and bottom.