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Anyone use seafoam?

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Old Sep 2, 2003 | 06:03 PM
  #1  
Hg's Avatar
Hg
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From: Midwest City, Oklahoma
Car: '87 Z
Engine: 355 in the works
Transmission: 700R4
Anyone use seafoam?

I got some of the seafoam... friend of mine praises the stuff...

Anyway, it says "With warm engine running, SLOWLY pour 1/3 pint through carburetor, throttle body, or direct manifold vacuum line that will feed ALL CYLINDERS. Possible sources are PCV valve or brake booster line." Has anyone used this, or can show me the best line to use? I want to be sure to have the ALL CYLINDERS part covered.... lol. I have an LB9 305 TPI...
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Old Sep 2, 2003 | 07:55 PM
  #2  
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Hg,

LOTS of people use SeaFoam. Lots of people swear by it, That's probably one of the reasons it's been around since the 1930's. It was originally formulated to prevent carburetor gum and varnish deposits in outboard engines that were stored during the ice fishing season. For a 70 year old formula, it's actually not the worst thing to use to prevent depostis from storage.

SeaFoam has some things in its formula that can help clean chambers, dissolve carbon and varnish, and clean up intakes and fuel systems. SeaFoam is basically refinery "waste". About 50% light hydrocarbon oil (pale oil), 30% petroleum naphtha, (charcoal starter fluid/mineral spirits, whatever you want to call it), 10% isopropyl alcohol, and 10% water. With the exception of the alcohol (added to keep the water in an emulsified suspension), the components are the mid- to upper-tier byproducts of hydro cracking useful petroleum products from crude oil. Those that are usually hardest to separate (normally done through a centrifuge) are simply sold as a mixture with some alcohol added to keep it volatile and emulsified. The water can clean combustion chambers. The Naptha and alcohol can dissolve petroleum deposits, The oil was left in the formula to make gasoline less volatile and protect parts during idle storage.

Of course, you can cut out the middle man and just use water to clean the chambers. Or you can buy it in steel cans with a red label for about $6. It's your choice.

Incidentally, I'd never even think of putting it in my engine oil, even though the synthetic would tolerate it a bit more than mineral oils.
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Old Jul 25, 2004 | 09:18 PM
  #3  
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From: NorthEast GA
Car: 85 Trans Am
Engine: 305 TPI
Transmission: 700-R4
Could this be bad for the engine? What about O2 sensor?
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