Fogging the diesel for winter?

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Sep 25, 2008
7,346
Alden 50 Sarasota, Florida
Never did this but noticed someone ask on a different forum which got me thinking(not good). Does anyone who like me lives where it gets cold in the winter fog the engine? Would be interested in pros/cons if there are any. Thanks
 
C

Chuck R

Diesel is an oil.

Hummmmm at least it ust'a be. But maybe today it's something differant.. So my oPYnion would be to fog it, what can it hurt? ooppps thinking gets me into trouble.
 
Feb 26, 2004
22,996
Catalina 34 224 Maple Bay, BC, Canada
Don, you're a regular here

scroll down about ten threads - sound familiar? FOG what??? Would someone please explain what this means, please?
 

Jim

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May 21, 2007
775
Catalina 36 MK II NJ
I am not a rocket scientist but

I am an engineer. It is not required becuase diesel is an oil. You are correct Chuck. I work for the railroad we have a lot of diesel engine out there.
 

Ross

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Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
If you crank the engine with

the compression release lever open you will fog the engine with diesel fuel.
 
Jun 6, 2006
6,990
currently boatless wishing Harrington Harbor North, MD
fogging is

coating the cylinders of an engine with oil so they don't rust during layup. IMHO there is not going to be that much water in the cylinders anyway once I drain the muffler. And you shut down the engine when it was hot so it is going to be dry to start with. The open exhaust valve on one of the cylinders can let the wet air from the muffler into the cylinder but that is one of the reasons for draining it.
 
Sep 25, 2008
7,346
Alden 50 Sarasota, Florida
thanks

I think. Seems the consensus is diesel is an oil... so is gasoline by that logic. I guess the conventional wisdom is that it isn't necessary which is comforting since virtually all powerboaters around me with diesels fog their engines. Stu - what thread?
 
Jan 26, 2007
308
Norsea 27 Cleveland
Argghhh

Apparently the chemists and chemical engineers haven't caught on to this thread yet. In any case, it sure is depressing to see the winterization debates picking up already.
 

Ross

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Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
Don, Just to make things foggier. Diesel fuel

is also a lubricant. Gasoline is NOT ! Not all petroleum products are motor fuels and not all motor fuels are lubricants.
 
Feb 26, 2004
22,996
Catalina 34 224 Maple Bay, BC, Canada
Don, this one:

http://www.sailboatowners.com/forums/pviewall.tpl?&fno=23&uid=73200280089&sku=2007277054324.17 I get into this via co.com, 24 Hr Activity, and NOT through a Topic List. That gets me ALL of what's going on. Some folks post subjects in "their boat size" categories that apply to many others. That's why I prefer to see them all.
 

CalebD

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Jun 27, 2006
1,479
Tartan 27' 1967 Nyack, NY
While in a Fog, and trying to winterize a diesel

all you have to worry about are the cooling system, electrical system (batteries), fuel system (bleed something, fill the fuel half way or better and add biocide and stabilizer?), and oil system. Am I missing anything? I do not mean to lubricate this thread but I suppose that is what I am doing.
 

Ross

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Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
Caleb, Don't forget the head and the galley

they winter over better with a small libation. Also be sure to take all of the food containers off that will freeze. AND DON'T FORGET THE BRASS MONKEY! ;D
 
Dec 3, 2003
2,101
Hunter Legend 37 Portsmouth, RI
A wintrization hint:

When you lay-up for the winter, loosen the engine belts to remove belt pressure from the alternator, water pump, raw water pump. Like a car that's laid up for a certain amount of time the pressures can stretch belts or pull the wrong way on a pump bearing which will force them to eventually fail. I lost an engine water pump and about 6-8 hours of labor three years ago because of this. Problems didn't materialize until I commissioned in the spring.
 
Jun 1, 2005
772
Pearson 303 Robinhood, ME
Nope

Tape the exhaust thru-hull and air intake to keep moisture out. Don't forget to remove in the spring!
 
Aug 9, 2005
772
Hunter 28.5 Palm Coast, FL
not needed but, if you insist....

they make special fogging oils but you can also us WD-40. Remove the air filter and spray WD-40 into the engine as it's running for 15 seconds and stop the engine. Reinstall the air filter. easy. You can also crank the engine with the compression released and spray the WD-40.
 

RichH

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Feb 14, 2005
4,773
Tayana 37 cutter; I20/M20 SCOWS Worton Creek, MD
Pauls advice is important .......

I quasi-remove (greatly loosen but leave in place) my belts and spray 'Boeshield' on the belt-polished sheeve surfaces to prevent the inevitable 'rust blooms' that occur over the winter. Most sheeves will rust over the winter especially in the areas where the belts are in contact with the sheeves. On Yanmars this is a very common problem .. and the subsequent roughness in the vee grooves leads to premature belt failure later on.
 
Jan 26, 2007
308
Norsea 27 Cleveland
Don Casey says

For what it's worth, I found this in the Don Casey library at boatus.com "Fog cylinders--gasoline engines only Remove the spark plugs and spray fogging oil into the holes. "Bump" the starter to spread the oil on the cylinder walls. Regap or replace plugs, as required, and reinstall. Fog intake--diesel engines only Spray fogging oil into the intake manifold and turn the engine over slowly by hand to draw the oil into the cylinders and spread it. Do not use the starter, even with the stop control pulled out; the engine can start on the fogging oil." It seems lots of folks here respect Dons opinion.
 
Jun 11, 2004
1,734
Oday 31 Redondo Beach
Stu

Your link is to a Catalina specific site. Don has a Hunter. I doubt he spends time looking at a site that is supposed to be Catalina specific. I know I don't.
 
Feb 2, 2006
470
Hunter Legend 35 Kingston
Fogging a Desiel ...

For my 3GM30F, I flipped all the decompression levers, and kept the stop level pulled, and fogged the intake while turning over the engine.
 
Feb 26, 2004
22,996
Catalina 34 224 Maple Bay, BC, Canada
Thanks, Richard, but Don's post

showed up on the 24 hr Activity, which is where I caught it, so??? Don's a valuable contributor and his input is very helpful, and I'm glad I "get" his material on our Catalina board. Don, how does that work for you?
 
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