Hey guys, I have been using Royal Purple and am experiencing this same problem. Taking it to the dealership this weekend to see what they tell me.
My oil pressure once the car turns on is at 13-19 at idle. Then once it warms up it idles in the 10's and gradually drops to 0. on the highway it stays around 20. This started yesterday which I changed my oil to Mobil 1 5W20 and still getting the same problem.
I will also check the codes it's throwing tonight to see what it says.
STAY AWAY FROM ROYAL PURPLE!!
Dana or anyone that has had this problem or experience with this before, is the sender senser cheap or can it be found at discount or anything so i can rule that out before going to the dealer?
My car is a 2007 Dodge Charger R/T 5.7 with 55,900 miles.
Thanks in advance.