I changed the 3 oil rings on the fuel drain because there was diesel fuel in the engine valley.
After a week, I noticed fluid in the engine valley and I thought I messed up the new o-ring procedure.
However, this evening I finally took a good look and after cleaning it up with paper towels, I discovered it was oil in the engine valley.
I did an advanced search to try and find answers to the cause of this problem.
What is the most common culprit for this? I don't want to dive into this without getting some opinions on this.
I am looking at the HPOP replacement o-rings, but also wonder if the plug should be replaced too...