I have never seen a problem with turbo o-rings leaking. Don't remember a truck where they didn't leak. Assuming this is why the turbo air lines have oil at the boots.

Do yourself a favor and buy a cam sensor to keep in the truck, they go out often but are about $20 and 2 minutes to replace. Maybe print out some instructions on how to change it and keep them with it. It's the same one used in the 99-02 7.3s. When buying parts you are better off to tell them the truck is an 02.