No Permatex #2 as this valve does not use pipe fitting so no lubrication or sealant was required for the B nut
As oil in the pump goes, it is hard to imagine that it will travel upward from the pump to the valve body and leak but fuel would not leak.
My gut feeling is grease or some sort of lubricant that was used in the assembly and now is turning to liquid.
BTW, hopefully folks have remembered to punch those four little screws on each port so they don't back off. I had missed that part on my first plane and it was a chore to punch them while mounted in place.
I e-mailed Andair to see if they have any insight to where the oil is coming from.