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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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Old 10-15-2013
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Winterizing Penta MD6A Without Running It

Hello Everyone,

I'm just wondering if it is possible to effectively winterize a Volvo Penta MD6A without running the engine?

Even if it is a bit more time consuming, it might be the best thing to do this fall. Next fall would be different, as a few things would have been sorted out.
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Old 10-22-2013
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Re: Winterizing Penta MD6A Without Running It

I'll throw out some thoughts, since nobody who actually knows is responding. I would think it very hard to get everything done without starting the motor. The block can usually be drained with help of a manual to show where all of the drains are. However, no way to get fresh oil circulated, nor treated fuel. I'd really worry about water that collects in the exhaust system/muffler (may have drain there too, but not all do), strainer, water hoses, etc. Be sure to pull thermostat to fuly drain block, and I'd pull the water pump impellor to empty that area of system as well. If you have a hand crank like my old voplvo did, then that can help circulate oil, lube cylinders, etc. at least. Hopefully, others will have better knowledge.
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1985 Marshall 22 catboat
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Old 10-22-2013
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Re: Winterizing Penta MD6A Without Running It

Thanks for the ideas Mike. So far we have been able to run the engine, so we got anti-freeze into the cooling water loop and out the exhaust. We checked the thermostat and found it had been cut out, so I'm looking for a compatible one.

I have to do some work on the feed pump. I'm guessing that will drain most of the fuel out of the engine. So I will put fuel stabilizer into the tank and just let it drip into a container.

I'm thinking I can run the starter for a few bursts and fog the engine. That could also be done to circulate fresh oil. I have yet to drain the old out though. I guess I have to find the drain plug for that!
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