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Old 02-11-2007
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? about sea foam

going 2 sea foam the whole tuck as in the crankcase, fuel tank, and the vacuum line. Also going 2 change the oil today too. is it better to sea foam the truck before a oil change or after?? i have herd to sea foam the truck 100 miles before a oil change but i just want to know whats best 4 the truck...
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Old 02-11-2007
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It's best not to leave Sea Foam in your oil. Do the application, leaving it in long enough to soak and then running it long enough to burn out all the carbon. Once the smoke has stopped, change the oil. It's simply a matter of the oil making it through the cycle from pan to head and back before the application is complete. Leaving it in the oil will do nothing but decrease the oil viscosity.
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Old 02-11-2007
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dumb question here....whats sea-foam??
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Old 02-11-2007
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Do I need to change the Oil if I only run it through the vacuum line and the gas tank?
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Old 02-11-2007
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Quote:
Originally Posted by blackbetty
dumb question here....whats sea-foam??
Check THIS THREAD out.

Quote:
Originally Posted by Msl747
Do I need to change the Oil if I only run it through the vacuum line and the gas tank?
No. Since you're not directly adding Sea-Foam to the oil system, it doesn't enter the head or oil pan at all. It simply combusts with the air/fuel mixture and is expelled through the exhaust system....cleaning as it goes.
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Old 02-27-2007
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Is there a recommended time to do this? I've got 62,000 miles on the ticker and I think it might help. So 1/3 in the vacuum line and then the rest in the tank? Maybe next oil change I'll put it in before I change it.
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Old 02-27-2007
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You can do it pretty much whenever you please. 62k sounds like as good a time as any to do it.
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Old 02-28-2007
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You might also consider replacing your spark plugs after the vacuum line application.

At LEAST clean and re-gap them.

Personally, I'd change the oil after SeaFoam cleaning, regardless.
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Old 02-28-2007
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Replace the spark plugs? I haven't heard of that one yet. Either way the sea foam is getting into the combustion chamber whether by gas or a vacuum line right? So therefore wouldn't adding it the gas make a person want to change the plugs? This is going to be my project for this coming Tuesday. Because 14-15 mpg sucks.
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Old 02-28-2007
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I put some sea foam in my truck awhile back, but I didn't see 140k miles worth of smoke......guess I didn't put enough in. (through the brake booster vaccuum line.)
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Old 02-28-2007
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^^^^^^^ If you didn't see allot of smoke that isn't a bad thing, that just means that your engine didn't have allot of carbon, 5.0's are the worst for carbon build up, they smoke til the cows come home.

I would recomend changing your oil if you vaccum line it. If you do it heavy some COULD slip past the rings and into the crankcase, at least it did on my bonneville. You should also change the plugs because they are more likely to foul after a heavy application, especially if you had allot of smoke (carbon burn off)
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Old 02-28-2007
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Quote:
Originally Posted by graygooseranger
I would recomend changing your oil if you vaccum line it. If you do it heavy some COULD slip past the rings and into the crankcase, at least it did on my bonneville. You should also change the plugs because they are more likely to foul after a heavy application, especially if you had allot of smoke (carbon burn off)
There's no way to add it quickly enough to slip past the rings into the oil. Since SeaFoam is added with the air/fuel mixture, it is burned and expelled through the exhaust the same way fuel and air is. It doesn't drown the top of your cylinders, and it does seep past the oil into the crank case or anything.

If you add it through the brake booster line, it is impossible to do anything other than give it "gulps" of SeaFoam at once. If you tried to suck in enough to soak the piston, it would stall the engine.
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Old 03-01-2007
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Jesus people, now I know why members get so pissed when they tell you to use a SEARCH! I just made a thread about this and I know that there are 2-3 more thread about this subject just on this forum, let alone on the rest of the internet. DAMN!
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