A couple weeks ago I took my truck to the dealership b/c while driving it acked as if it had a miss. I scanned it for codes and nothing out of the ordinary showed up. They scanned it and told me that injects 2,4,and 6 where messing up. So, I decided to wait and try a can of seafoam and if that didn’t fix it then I would save up to get some stage 1's. I added the seafoam and changed the oil. Now after diving it for a week or so a oil smell from the vents has started (not a coolant smell) I checked the motor and im not seeing any leakage, but I do have a few moist spots that have been around for a couple years that Im not extremely concerned about. Does any ne have any Ideas? I’m in an 04 f250 6.0 with abut 180K.