sjs... your quesiton is a valid one. While I won't claim to know exactly what you need to do to the diesel
to store it for a long period, I will say you need to do something. I don't know if this involves removing injectors and fogging the cylinders or what it involves on the diesel
. The key would be a proper "decommissioning" of the engine for a long sit. Others on this board may know how to do that. It's not my area of expertise.
However, I can safely say you should not run your diesel periodically while on the stands. First, you will have some difficulty getting water. Second, each time you run it, you will have to re-winterize, as part of a proper winterization is getting anti-freeze through the raw water
portion of the cooling
circuit until it comes out the exhaust
. Third, many marinas
don't allow you to run your engine on the stands, as there is a risk of your boat falling off the stands due to the vibrations if it's not running smoothly.
So... it's best to decommission the engine properly and let it sit.