anyone ever use Seafoam or GM top end cleaner in their motor - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-27-2006, 12:10 AM   #1
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Default anyone ever use Seafoam or GM top end cleaner in their motor

I used seafoam once in my 99 Cobra and it ran like a champ afterwards. Basically suck it in through the PCV vaccum hose into the upper intake and it cleans deposits/sut/carbon buildup. It made my idle smoother and car picked up better afterwards as well. It smokes for like 10 minutes real bad, then you start to feel the car rev more freely.

I'm going to do it this weekend since I have 90K+ miles on it.
It'* $4.99 at autozone in a old school looking can.

while we are on the subject what is the best fuel injector cleaner? chevron/techron has had good reviews from what I hear.
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Old 01-27-2006, 12:12 AM   #2
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Default Re: anyone ever use Seafoam or GM top end cleaner in their m

Quote:
Originally Posted by fatboyq
I used seafoam once in my 99 Cobra and it ran like a champ afterwards. Basically suck it in through the PCV vaccum hose into the upper intake and it cleans deposits/sut/carbon buildup. It made my idle smoother and car picked up better afterwards as well. It smokes for like 10 minutes real bad, then you start to feel the car rev more freely.

I'm going to do it this weekend since I have 90K+ miles on it.
It'* $4.99 at autozone in a old school looking can.

while we are on the subject what is the best fuel injector cleaner? chevron/techron has had good reviews from what I hear.
seafoam is always fun to use

chevron/techron is what a GM tech I talked to reccomended. It is actually the EXACT same thing as the GM injector cleaner, jsut rebottled.
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Old 01-27-2006, 01:26 AM   #3
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is this stuff actually worth it and good to use?
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Old 01-27-2006, 01:44 AM   #4
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what are the pros of using this? can it be used in a supercharged engne? with 153000? and if it is good, can someone do me a writeup on how too for me to use it on my car, if i can and it is worth it
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Old 01-27-2006, 01:46 AM   #5
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If your Cat is on it'* last legs, this COULD finish it, or make it a bit worse. That crap has to go somewhere.

Or does the cat run hot enought to burn it off? I personally haven't done it. My water injection (even with infrequent use) keeps my top end sparkling.

On a new cat (less than 5 years old) I wouldn't hesitate to use it from the benefits I've read about.
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Old 01-27-2006, 02:02 AM   #6
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I've heard of seafoam spinning bearings in the lower end. does this only apply if you put it into the crankcase, or can it get introduced into the oil if you suck it up through the vacuum hose going to the PCV?
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Old 01-27-2006, 02:04 AM   #7
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Quote:
Originally Posted by Custom88
I've heard of seafoam spinning bearings in the lower end. does this only apply if you put it into the crankcase, or can it get introduced into the oil if you suck it up through the vacuum hose going to the PCV?
some people put seafoam into the oil to clean old deposits and crap off the block.

it should NOT hit the oil if you suck it in vaccuum lines.
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Old 01-27-2006, 02:06 AM   #8
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My buddy is obsessed with Seafoam. He puts a whole can of it in his gas every other fill up in his 5300 Ser V8 Silverado. Its a 2000 w/ 145,000 miles and no problems.
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Old 01-27-2006, 02:10 AM   #9
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Quote:
Originally Posted by fantastic88
My buddy is obsessed with Seafoam. He puts a whole can of it in his gas every other fill up in his 5300 Ser V8 Silverado. Its a 2000 w/ 145,000 miles and no problems.
Your buddy is perhaps the biggest idiot I've heard of. That'* of no benefit to him whatsoever. At least not in that dosage.
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Old 01-27-2006, 02:15 AM   #10
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yeah, that is way too excessive. I usually run it once a a year as part of a yearly tune-up regimine. I usually put it into my gas tank when I have around 1/4 of a tank left.. cleans out the deposits nicely. I think I will try it in in the VAC system in a few weeks to clean out the upper end. I also use marvel'* mystery oil in my oil every oil change.. keeps the engine nice and quiet. .
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