Oil and seafoam - JeepForum.com

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post #1 of 26 Old 05-21-2011, 09:14 AM Thread Starter
Howieb92
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Oil and seafoam

Hey guys is it best to use sea-foam in oil before I change it or after I got right around 700 miles till it needs changing and where else can I use sea-foam. And can you explain what I need to do for it all thanks.

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post #2 of 26 Old 05-21-2011, 10:00 AM
Freestyle713
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if you want to put it in the oil, wait until you are 50-75 miles away from changing it. then put it in. but if you have any kind of oil leak, i wouldn't seafoam. it will make the leak worse.
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post #3 of 26 Old 05-21-2011, 10:33 AM
blackjack12982
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Howie,

Like it was mentioned earlier, use it immediately before the oil change. I wouldn't want it inside possibly damaging any seals for any longer than necessary. I used Sea-Foam when I first bought my ZJ several years ago, but since then haven't used it for fear that my slow rear main leak would get worse. I've got 185k on my 5.2, and there's no way I want to even have a shred of a doubt that Sea-Foam pushed my engine over the edge into full on rebuild time.
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post #4 of 26 Old 05-21-2011, 10:48 AM Thread Starter
Howieb92
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Ok thanks guys I'm just lookin to see how anyway to get better gas mileage
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post #5 of 26 Old 05-21-2011, 11:19 AM
ibrady
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I'm also wondering if this will do damage to my engine. The PO said it was rebuilt and has about 110k on it now. I have a very small oil leak from the oil filter area...
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post #6 of 26 Old 05-21-2011, 11:22 AM
blackjack12982
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It can dislodge gunk that had previously not been leaking, but after cleaning will leak. IIRC, there was a thread on this forum about the gunk that had accumulated in a V8 in the lifter valley, after a heavy dose of Sea-Foaming, it dislodge clogging the oil pump making the engine fail...
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post #7 of 26 Old 05-21-2011, 08:46 PM
freakinheep89
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Most of the time the only ones you need to worry about are poorly maintained motors. Seafoam helps greatly no matter what when run through the throttle body and vac lines. Running it through the oil will cleanse any carbon buildup that has accumulated. It can make leaks worse, basically it cleans all the crap that keeps it from leaking.


If you have any major oil leaks you might not want to do it, but i would at leaast run it through the TB and vac lines, and run some through the fuel.

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post #8 of 26 Old 05-22-2011, 05:04 AM
ScottyGunn
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Quote:
Originally Posted by Freestyle713 View Post
if you want to put it in the oil, wait until you are 50-75 miles away from changing it. then put it in. but if you have any kind of oil leak, i wouldn't seafoam. it will make the leak worse.
Yup! I did, and it does!

Newby with first Jeep!
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post #9 of 26 Old 05-22-2011, 07:56 PM
gothchick
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Thanks for the heads up. Think I'll pass on this then.
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post #10 of 26 Old 05-22-2011, 11:12 PM
khakioutlaw
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I had a small/minor oil leak that I fixed after seafoaming my Jeep. At the time when I did seamfoam my engine (160k miles), it didn't make the oil leak any worse or better. So, I guess it's just personal preference. In my honest opinion, my ZJ runs a hell of a lot better since seamfoaming it but ultimately, it is your decision. If it were a major oil leak, then your may want to pass the seamfoaming in the crankcase and just stick to the throttle body/vacuum lines.
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post #11 of 26 Old 05-23-2011, 12:43 AM
ratmonkey
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I like to toss in some atf about 250mi before a change every two or three changes.

Keeps things nice and clean.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #12 of 26 Old 05-23-2011, 11:51 AM
harwood909
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Quote:
Originally Posted by ratmonkey View Post
I like to toss in some atf about 250mi before a change every two or three changes.

Keeps things nice and clean.
I've heard of this, too... I guess that was part of Marvel oil when it first came, a mix a ATF and somethin else, can't remeber.

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post #13 of 26 Old 05-23-2011, 12:45 PM
Wood2km
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I would highly recommend seafoaming through the TB and vacuum lines. I have not done it in the oil before, but if it was burning oil, I would consider it. Using it in the fuel and TB/vac lines improved my power, and picked up 2-3 mpg. Paid for itself in one tank of gas.
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post #14 of 26 Old 05-23-2011, 01:09 PM Thread Starter
Howieb92
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What do you have to do to run it through the tb and vac lines I haven't done that before
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post #15 of 26 Old 05-23-2011, 02:12 PM
Wood2km
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Quote:
Originally Posted by Howieb92
What do you have to do to run it through the tb and vac lines I haven't done that before
The directions are right on the bottle. You pop off the brake booster line and start the jeep. Trickle the seafoam in the hose, not letting it stall. Then pour a bunch in and stall it out. Let it sit for 30-60 mins, then start it and take it for a "spirited drive. "
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