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#4554288 - 10/25/17 03:28 PM Fogging cylinders for winter storage
Danh Offline


Registered: 10/16/10
Posts: 1752
Loc: .
When storing a car for the winter does anyone fog the cylinders?

I store my MX5 in an unheated garage in a cold part of the country. It will be untouched from about now until Mid-May. I've stored it for a number of years without trouble but have always fogged the cylinders as part of the winterization process. Is this a waste of time? Do others not do this and also have trouble-free springs? Any value or just a placebo?

Thanks!

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#4554303 - 10/25/17 03:45 PM Re: Fogging cylinders for winter storage [Re: Danh]
dlundblad Online   happy


Registered: 09/30/13
Posts: 10060
Loc: Indiana
People do this with boats to fight corrosion from moisture. Has your Mazda seen much water? laugh

Not sure how to add the fogging spray on a fuel injected engine other than removing the spark plug and giving them a spray.

I would add some fuel stabilizer and run the engine on the highway and until hot and call it good.
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#4554308 - 10/25/17 03:51 PM Re: Fogging cylinders for winter storage [Re: dlundblad]
EdwardC Offline


Registered: 11/14/13
Posts: 1864
Loc: Chicago, IL
Originally Posted By: dlundblad
I would add some fuel stabilizer and run the engine on the highway and until hot and call it good.


I would do the same. I'd top off the tank with gas on the way home and connect it to a battery maintainer as well.

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#4554321 - 10/25/17 04:07 PM Re: Fogging cylinders for winter storage [Re: Danh]
Danh Offline


Registered: 10/16/10
Posts: 1752
Loc: .
Done the full tank, gas stabilizer and long run before storage. Battery is removed and stored in a heated basement. And yes, fogging the cylinders involves removing spark plugs and spraying into the cylinders. Not a ton of work, just not sure I'm accomplishing anything worthwhile.

Not a lot of moisture exposure. Well, except it was out in a brief rain shower in August...

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#4554335 - 10/25/17 04:21 PM Re: Fogging cylinders for winter storage [Re: Danh]
Lolvoguy Offline


Registered: 02/06/14
Posts: 2350
Loc: Canada
fogging spray on a car is overkill IMHO. A liberal dose of fuel stabilizer in your fuel is easily enough to accomplish the desired upper lubricant your looking for.

Usually you'll know you've added enough stabilizer, when there's a noticeable difference in performance (less power).
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#4554339 - 10/25/17 04:24 PM Re: Fogging cylinders for winter storage [Re: Danh]
NYEngineer Offline


Registered: 12/12/06
Posts: 1574
Loc: NY, NY
I worked for a guy once that tried to fog a 3208 Cat with Marvel Mystery Oil. Thing took off on him. He stuffed a pillow from the sofa in the boat into the air intake to stop it.

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#4554346 - 10/25/17 04:37 PM Re: Fogging cylinders for winter storage [Re: NYEngineer]
Dyusik Offline


Registered: 09/26/14
Posts: 1984
Loc: US-WA
Originally Posted By: NYEngineer
I worked for a guy once that tried to fog a 3208 Cat with Marvel Mystery Oil. Thing took off on him. He stuffed a pillow from the sofa in the boat into the air intake to stop it.


Fogging a diesel ! LOL LOL LOL duh duh duh crackmeup crackmeup crackmeup crackmeup crackmeup crackmeup crackmeup crackmeup crackmeup crackmeup crackmeup crackmeup crackmeup crackmeup crackmeup
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#4554456 - 10/25/17 06:29 PM Re: Fogging cylinders for winter storage [Re: Danh]
Donald Offline


Registered: 03/21/04
Posts: 20472
Loc: Upstate NY
Boats typically get fogged through the carb often with 2 cans of stabilizer at once. The goal is to stall the engine.

I could see the fogging oil not being good for a cat in the car.
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#4554476 - 10/25/17 06:46 PM Re: Fogging cylinders for winter storage [Re: Danh]
demarpaint Offline


Registered: 07/03/05
Posts: 29805
Loc: NY
What I've done in lieu of fogging the engine in my son's car prior to his deployments is have him pour in a quart of MMO along with a few ounces of Stabil Marine in the gas tank at the gas station and fill it up. Then drive to where it is going to be parked, park it and do any final preparation. It will not foul plugs, and it won't kill the cat converter. It will leave a residual film of MMO on the cylinder walls.

You can also do it with TCW3 which would probably leave a better film, although I'm not sure of a safe dose. I'd probably use a pint to a 20 gallon tank of gas for storage purposes. We've used TCW3 for this purpose in 4 cycle boat engines with good results, I'd have to check with my brother on the dose.
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#4554480 - 10/25/17 06:48 PM Re: Fogging cylinders for winter storage [Re: Donald]
Danh Offline


Registered: 10/16/10
Posts: 1752
Loc: .
Originally Posted By: Donald
Boats typically get fogged through the carb often with 2 cans of stabilizer at once. The goal is to stall the engine.

I could see the fogging oil not being good for a cat in the car.



The idea here (per the aerosol can) is to introduce fogging spray with the engine off and cold, leaving an anti-corrosion coating on the surfaces of the cylinder and piston rings. But maybe this is already taken care of with residual engine oil.

Don't think this method would have any effect on the cat, but may not do any good either.

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#4554510 - 10/25/17 07:26 PM Re: Fogging cylinders for winter storage [Re: Danh]
Nitronoise Offline


Registered: 03/24/10
Posts: 488
Loc: Chicago Suburbs
ok my question is why would you fog it then run it until its hot and burn off the fogging oil ??????

I have always fogged when shut down pull the plugs spray your fogging agent into the cylinders and rotate a few turns to ensure even coating and put the plugs back in or am I doing something wrong here for the last 35 years of storing small engines and summer cars
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#4554553 - 10/25/17 08:08 PM Re: Fogging cylinders for winter storage [Re: Nitronoise]
Danh Offline


Registered: 10/16/10
Posts: 1752
Loc: .
Originally Posted By: Nitronoise
ok my question is why would you fog it then run it until its hot and burn off the fogging oil ??????

I have always fogged when shut down pull the plugs spray your fogging agent into the cylinders and rotate a few turns to ensure even coating and put the plugs back in or am I doing something wrong here for the last 35 years of storing small engines and summer cars


I don't run after fogging, it's the last step in the process just as you have been doing.

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#4554811 - 10/26/17 04:58 AM Re: Fogging cylinders for winter storage [Re: Nitronoise]
demarpaint Offline


Registered: 07/03/05
Posts: 29805
Loc: NY
Originally Posted By: Nitronoise
ok my question is why would you fog it then run it until its hot and burn off the fogging oil ??????

I have always fogged when shut down pull the plugs spray your fogging agent into the cylinders and rotate a few turns to ensure even coating and put the plugs back in or am I doing something wrong here for the last 35 years of storing small engines and summer cars


Exactly. After you fog it don't start it, you want that fogging oil to remain not burn it off. I fog small engines exactly the same way as you do. IMO you're not doing anything wrong.
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#4554843 - 10/26/17 06:13 AM Re: Fogging cylinders for winter storage [Re: Danh]
philipp10 Offline


Registered: 05/09/14
Posts: 1184
Loc: Minnesota
I don't know if you should fog or not. I will say this, people with boats (even fresh water boats) fog. And tbh, the environment of a inboard motor on a boat is really no different than that of your car. The moisture levels inside the engine bay are very similar (your car drives through rain storms...right?). So either the boat people are un-necessarily fogging or the car people are not fogging enough.

On my boat I used to fog by spraying fogging oil in the carb. About 20 seconds and then shut it down. One year I pulled the plugs and sprayed directly. I think the idea of using 2 stroke oil is pretty good except I don't want to pollute a full take of gas with it. I would do it with an almost empty tank, run it, shut it off, then fill the tank with clean gas.

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#4554943 - 10/26/17 09:04 AM Re: Fogging cylinders for winter storage [Re: Danh]
Tundragod Offline


Registered: 06/14/11
Posts: 179
Loc: MN
Fog it and fogget about it! lol.
I sprayed fogging oil thru the spark plug hole for 10 seconds, per can direction. Turned the ignition to cycle the cylinder for 1 second with spark plugs out. Put the plugs back and store it.
For over 20 years, I fogged and not fogged my motorcycle. Didn't see any difference.
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