I'll be putting a fairly low mileage 2.5 turbo away for a while and am looking for any ideas you may have for storage. The engine could be out of use for 6 months, 3 years, I don't know.
What I was thinking was to use some fogger oil to help keep the cylinders oiled. Also remove the rocker arms so the valves stay closed to keep crap out and so the valve springs don't stay compressed for an extended time. Obviously tape shut the throttle body, turbo openings, etc.