Fluctuating oil pressure guage
On my old Cummins the older the oil change is the more the gauge drops...change the oil and its back up.
I was told by a HD/MD truck mechanic that on a 6BT Cummins the pressure was not what the oil system controlled. It was mostly volume on that engine and the gauge with pressure on it just gave you something to look at.
2017 Puma 297RLSS
2005 Ram 2500 4X4 diesel SMOKER!!
I love puns, irony and tasteless jokes...
born in Texas.... live in Arkansas