Join Date: Feb 2010
Location: Narragansett Bay
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Re: Putting a boat on mothballs?
You need to do some tough soul searching to decide whether this boat is worth storing. Can't help with that.
Capta's post contains most of what I'd suggest for storing the engine. I'd add there are fogging sprays that you should spray into the cylinders, via the injector ports, and manually turn the motor over to coat the pistons, rings and cyclinder walls. You might as well just plug the ports with corks, afterward, because you'll probably want to service the injectors, if they sit for years. Also, I'd change the oil, replace it and change it again to flush out all contaminants. I'd add an engine flush to the warm up before the first change to help remove corrosive sludge. There are additives you can put in fresh oil for long term storage, which are worth considering. If you have a heat exchanger, change the coolant side, as the anti-corrosion properties wear off over time. You may want to insert a desiccant into the intake and breather to absorb moisture.
There is a logic that says, if you can keep something just far enough above the dewpoint, corrosive condensation can't form. I know some that simply put a 100w incandescent bulb in the engine compartment full time, which raises even cold temps by 10 or 20 degrees. Not sure that isn't a fire hazard, so proceed at your own risk.
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In the harsh marine environment, something is always in need of repair. Margaritas fix everything.