Seafoam - MustangForums.com


5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

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Old 05-24-2007, 07:29 PM   #1  
watson30
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Besdies cleaning out the combustion chamber what else does this stuff do? Does it help your car run better?
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Old 05-24-2007, 07:34 PM   #2  
FrostByte
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That stuff is crap. No substitute for using a full synthetic motor oil that doesnt deposit crap in the engine in the 1st place. Go tell the dealer your using it if you want your warranty to disappear fast.
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Old 05-24-2007, 07:36 PM   #3  
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Well I see alot of guys on here using it... its an old car so I figured why not. Why is it so bad?
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Old 05-24-2007, 07:38 PM   #4  
86GT 93LX
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its not but i dont put it in the oil or gas, i put it thru the vacumline like it says on the can. and it works unlike all the other crap in cans ive used
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Well I see alot of guys on here using it... its an old car so I figured why not. Why is it so bad?
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Old 05-24-2007, 07:51 PM   #5  
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I know that, but does it make your car run smoother?
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Old 05-24-2007, 07:59 PM   #6  
samseed101
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ORIGINAL: FrostByte

That stuff is crap. No substitute for using a full synthetic motor oil that doesnt deposit crap in the engine in the 1st place. Go tell the dealer your using it if you want your warranty to disappear fast.
I can't imagine too many people are running a 5.0L Mustang that's still under warranty.

Edited to add: But even if I were still under warranty, I imagine that nitrous, or a supercharger, or any aftermarket H/C/I, CAI, pulleys, gears, etc would void it as well.

Just because they would void a warranty...that doesn't mean the product is bad.
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Old 05-24-2007, 08:04 PM   #7  
watson30
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Samseed I know you have experience with this product. What are your views on it? does it make the car run smoother?
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Old 05-24-2007, 08:15 PM   #8  
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Personally, I love it. Last summer, I used it in my Mustang and saw very little to no smoke (I did the typical crankcase, gas tank, vacuum line method.) I'm guessing it had little effect on the Mustang because the engine was so clean to begin with...very little buildup. So I bought some for my Geo Tracker and did the same thing. It put on one hell of a smoke show. Then I did the same thing to my GF's Hyundai and the same thing happened.

I just got another can that was given to me for free a few weeks ago. Probably going to put it in today and see how that runs.

I can't say for sure if the car runs smoother or anything. To me, it seems like it runs better but that could all be pyscohological. That and I change components and retune it so often that I'm not even sure what "normal" or "smooth" is anymore

But I've never had it ruin any cars or engines or anything. I have heard of it damaging spark plugs. But that's because the plugs were so bad that the only thing holding the tips together was carbon buildup. In that situation, the plugs should have been replaced anyway.
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