questions about sea foam
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Seasoned Member
Joined: Feb 2011
Posts: 301
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From: princeton il
Model: Cherokee
my jeep has dam near 400k on it is it a good idea to run sea foam through it. ive heard on really hi milage vehicals that sea foam basicaly kills it and that all the build up on the valves and such is what is keeping it running is this true?? if i get it should i just run it through my gas tank or should i not even try it
CF Veteran
Joined: Mar 2010
Posts: 47,923
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From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
ive seen sea foam go both ways works great and screwed my stuff all up flip a coin i say,on older vechicles that stuffs been in there for years sealing all the little cracks and crevices i aint takng the chance ,no such thing as tune up in a can lol jm2cw
Last edited by freegdr; Apr 13, 2011 at 05:30 PM.
CF Veteran




Joined: Nov 2010
Posts: 5,839
Likes: 116
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
I have also seen great results and some not-so-great results by introducing Seafoam into the engine.
However, there is NO risk in running a bottle of Seafoam in a tank of gas to clean the fuel system and help optimize the spray pattern of the fuel injectors.
The "stoddard solvent" in Seafoam is pretty darn good.
However, there is NO risk in running a bottle of Seafoam in a tank of gas to clean the fuel system and help optimize the spray pattern of the fuel injectors.
The "stoddard solvent" in Seafoam is pretty darn good.
CF Veteran




Joined: Nov 2010
Posts: 5,839
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From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
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CF Veteran




Joined: Nov 2010
Posts: 5,839
Likes: 116
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
CF Veteran




Joined: Nov 2010
Posts: 5,839
Likes: 116
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
Junior Member
Joined: Mar 2011
Posts: 47
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From: Rapid City SD
Year: 1997
Model: Cherokee
Engine: 4.0
If you've kept up with reg mat which at 400K I'm sure you have. I wouldn't think you would have any problem seafoaming the oil. I don't see why putting it thought the tank and vac lines would cause any thing to leak. All putting it through the vac lines does is clean carbon off the valves. I'd say at least tank and lines your choice on the oil. Saying it will cause a leak on an old engine is like saying switching to Synth oil now will cause it to blow up.
CF Veteran
Joined: Mar 2011
Posts: 1,423
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From: Owensville, MO
Year: 1998
Model: Grand Cherokee
Engine: 5.9
Personally, I would be scared *****less to introduce anything to a 400k engine that it's not used to... I definitely wouln't mess with it now if it's not giving you any issues.
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