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Dont think Ill ever use fogging oil again. Anybody else have problems...

16K views 16 replies 14 participants last post by  yeti  
#1 ·
I fogged a sbc engine down almost a year ago, and didnt start it till today. Fogged it down with Stabil fogging oil thru all the spark plug holes. Car has been in an air condioned garage the whole time and engine spun over every couple weeks.

Took all the plugs out before starting and they were the worst looking plugs id ever seen. They looked fine before storage.. just nasty looking now. Almost rusty and crusty but with a touch of grime to em. Most had crap in between the electode gap. Anyways put new plugs in and it did start right up, but i am guessing may have had a stuck ring. Smoked for a good three four minutes and breathers were blowing oil like crazy. had a little rattle to her too. Maybe piston slap if the rings were stuck?????

Seems completey fine now after warming up and clearing it out.. just an all stock bottom end right down to the pistons, so i could go thru it or just let it ride. Just looking for thoughts/ opinions.
 
#2 ·
I copied this from another thread I replied to.





Image
Re: Internal engine rust
I run out the methanol.
Put gas in the fuel cell mixed with 2 cycle oil (heavy) and as the engine is about to run out of the mix, I squirt gas and REALLY heavy 2 cycle oil into the hat and let it die.

Then, I put plastic over the hat opening and, duct tape it so it's completely sealed off.
My car has side exit exhaust, I put plastic over the openings, duct tape so sealed off.
Duct tape over the valve cover breather's, done deal.....

No air flow, no condensation.

Jim
 
#4 ·
Yeah i hear ya there on the smoking. Just looked like this stuff reacted with the carbon, race gas, or something. I just had the plugs hand tight, maybe better to make sure they are sealed tight next time. I know its more of a slime than oil per say, but i am thinking this stuff just got too hard and stuck some rings. I am wondering if stuck rings could make a piston slap fairly loud though? Both breathers were pumping smoke and oil out as well. In hindsight i should of shot some wd-40 down first before starting.
 
#12 ·
I run E85 and use the Stabil fog. The engine will actually run on the fog stuff.

What I do is turn the pump off and wait till it starts to run out of fuel. Just as it starts to die I start spraying down all 4 barrels. The engine will continue to run until you stop spraying. Plus are always coated with a nice oil film.

I don't see how the plugs would have got any fog oil on them since you obviously had them out to spray in the holes ? Directions say to fog through the carb as the engine dies then remove plug and spray cylinder. I've found my routine works OK and is very simple. I do it any time the engine will be dormant more than a day.
 
#15 ·
The phosphorous and bromine lead scavengers in leaded fuel make deposits that look like rust. Those big orange-red ladybug wing looking bubbles on sparkplugs, in exhaust ports & headers and in combustion chambers, are from that fuel additive. Looks ugly but is relatively harmless, it will go away when you run the engine the next time.

This qoute was from yeti in the rust prevention thread. This is probably the crap i saw on the plugs.
 
#16 ·
When tetraethyl lead (TEL) burns, one of the products is lead oxide (PbO), which melts at 1630°F. This would form deposits on the valves, combustion chambers, piston tops, and cylinder walls, so they have to get rid of it somehow. They add 1,2-dibromoethane along with the TEL to turn the PbO into lead bromide (PbBr2), which melts at a much lower 699.1°F, so it doesn't deposit to nearly the extent that PbO does. None of these compounds are brown/orange/red.

Having said all that, it's possible there are unintended side products that are brown/orange/red, but it doesn't seem like there should be much of them.
 
#17 ·
The red, orange, yellow, brown, and sometimes green, colors you see on spark plug ceramic when you read plugs are the oxides of lead (TEL) or manganese (MMT), lead oxide, lead dioxide, lead trioxide, etc. This is what colors the nasty bubbly ladybug wing looking deposits that form when an engine sits after running highly leaded fuel. The compound of bromine and lead, of which the deposits are formed, melts at a low enough temperature the next time you run the engine they melt and blow away. It truly is no big deal.