I'm going to be deployed to Iraq soon and I want to know if anyone can tell me how to prepare my vehicle for a year of non use. The truck itself will be used, just not the wvo system. Thanks.

All you can really do is run fresh diesel thru the system. I would disconnect any lines from the wvo and plug them. If you can drain the wvo tank and put diesel in it. When you come back drain the fuel and put fresh into the tanks again. You will probably have polermization on connectors etc but that is unavoidable. I had a 300 cd that sat for a year and had to run diesel purge thru 3 times and now I will be cleaning out the injectors as I got a pop tester.