Sooooo, after re-reading the entire thread up to this point, the gist of it is that there's NOTHING wrong with your truck, but there's a little oil in the bottom of the ICP sensor receptacle? So..... am I reading this right..... that since you found that oil in there you EXPECT the truck to be messing up and you're actually "getting a little pissed" because it runs like a top????
When you find yourself trying to manufacture problems like this, then I would suggest that you find something to do with your time. When/if the truck ever actually has a problem, then and only then would I worry about how to fix it.
You can't fix what isn't broken...