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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

View Poll Results: Have you ever used Seafoam?
Yes, I highly recommend it. 58 37.91%
Yes, But I dont recommend it. 8 5.23%
No, But I have thought about it. 60 39.22%
No, I would never do it. 10 6.54%
No, I have mixed feelings about it. 18 11.76%
Multiple Choice Poll. Voters: 153. You may not vote on this poll

Thread Tools Search this Thread Rating: Thread Rating: 9 votes, 5.00 average.
Old 01-16-2009, 01:06 AM   #281
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The little lady over my shoulder is asking if she can put seafoam in her bath.......
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Old 01-16-2009, 01:08 AM   #282
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Old 01-16-2009, 01:40 AM   #283
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nice try lazy @ss
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Old 01-16-2009, 01:41 AM   #284
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I just can't imagine the world without the smell of burned gas coming out of a well tuned engine:drool:
Originally Posted by zhp pilot View Post
nice try on the sig you tard. unfortunately, when you click the link you see the actual quote.

you are on a roll with the FAIL tonight. :lmao:
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Old 07-04-2009, 07:53 AM   #285
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seafoam question + 100k miles

so I have done some research thru the great diy's on this site and I plan on doing tranny fluid change and coolant change tomorrow as well as some seafoam action... my question is tho... if I just do the seafoam in the vacuum line and in the gas ONLY(not in the oil) do I need to change my oil? can it contaminate the oil only doing those parts of the seafoam procedure?? I totally forgot I had a can of seafoam laying around and I just changed my oil and my filter 2 days ago...
also I'm coming up on 100k miles... can anyone link me a list or something of recommended maintenance?? I have 99 328i btw and when I do hit 100k I definitely will replace fuel filter/spark plugs after doing this seafoam... I'm at 96k rounding up right now, that sound good to u guys? thanks for the help in advance, I F'n love this forum!
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Old 07-04-2009, 09:42 AM   #286
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Yes you do want to change your oil. I think I read to change it relatively soon after adding into the oil, like within the first 300 miles or so. There is a huge thread on using it if you do a search. They do not put it in the oil in the DYI if I recall and nor did I when I seafoamed/deep creeped. I highly recommend being extremely careful around those brittle hoses considering the milage. I tore a intake hose and didn't know it was causing my lean codes until I finally took it into a shop and they noticed it. I just assumed it was throwing codes cause of the sea foam. Anyway hope that helps a bit.
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Old 07-04-2009, 10:49 AM   #287
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Ya, you're supposed to change the oil afterwards. I usually do it about 200-300 miles before I change it. And for that 200-300 miles, I try to drive as hard as possible.
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Old 07-04-2009, 10:59 AM   #288
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What problem are you trying to solve with the Sea Foam goo?
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Old 07-04-2009, 12:42 PM   #289
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ok, thanks guys. sry for the length of the post and sry if some of this stuff is hidden on the site somewhere.. I try to research as much I can but it was super late/early and so I had to pass out, and I know ppl love to help out on here . anyway, I figured it would probably be safer to change oil after a seafoam just to clear that gunk out if it got in it... was just getting my hopes up to possibility of not tho since I just changed it LOL ugh!! that stuff is serious tho! I've heard great things from my friends using seafoam so I can't wait to try it on my car.. Im betting the previous owner never did it along with a few other things so I wanna clean my car out thoroughly and get it running its best... but I guess I'll just have to knock out the other stuff and hold off on doing it until right b4 my next oil change and then change my fuel filter and spark plugs along with it all in one big step...yay!

anyone know some maintenance issues/ things I should look out for at 100k tho?? my window regulators sound totally dead even tho they still barely work hahaha.. also my biggest problem currently is a creak coming from my left front wheel it sounds like... it only happens when I turn left and especially when I turn slowly. in fact turning slowly left I can lengthen the noise out the slower I turn and the more I change the sharpness/degree of the turn... it sounds like a low tone clicking/knocking noise or something... I checked my PS fluid and top'd it up a bit and that only helped but a tiny tiny bit... anyone have any ideas on things I could check while underneath the car today regarding that and just anything else to look out for?? also does anyone know if my car, 99 328i, has a CDV?? I'm gonna look, but just thought I'd ask.. it feels like I have one.. sometimes when I disengage the clutch it makes this loud clunk sound as well.. any ideas? sry to take this thread all over the place lol, but thanks u guys!!!!
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Old 07-04-2009, 12:44 PM   #290
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and thanks for the heads up on the hoses surrept.. when I do seafoam I will be careful about that
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Old 07-04-2009, 03:19 PM   #291
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Yeah just pour it down the brake booster vacuum line while the car is started. And also in the gas tank. Make sure the car is FULLY warmed up before you are doing this. Go for like a 20min drive or sometihng before doing this.

Also, change your brake fluid if you have not done so for the past two years. And, dont forget your cabin air filter and intake filter! Replace those too.

About the clutch clunk noise... you just have to get used to the car and the clutch. Just be more smooth with it, try to rev-match even while upshifting (waiting until the revs drop to the next gear's rpm while slowly engaging the clutch).. it just takes some more practice and some finesse. Dont worry, when i first bought this car, it was a bit weird for me too.... The clunking noise in the rear, etc... but as I got used to the car, and the clutch, and the gearing, etc. I dont hear the clunk anymore. If I want, I can make the clunk happen when I am not smooth with the clutch, but why do that? lol...

Anyway, good luck with the seafoam. Pour some in your oil before the next oil change.

Also, at around 100k and beyond, you should look into your waterpump/radiator/cooling system. Make sure it has been replaced recently, if it hasnt, then be prepared to shell out $$ to replace it before something bad happens. Keep in mind replacing the headgasket and VANOS seals and the oil separator. And also the DISA valve. Those were my major problems. Another problem I had was the ICV, and related components. You should do a tune up of your own and clean the throttle body and the idle control valve (ICV).

In the future, look into replacing the entire suspension... along with control arms and bushings.

Best of luck, I hope this post helps.

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Old 07-04-2009, 06:11 PM   #292
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I wouldn't recommend using seafoam, I used it on my jeep and it hasnt run right since so I think it damaged the 02 sensors or the cat, besides as long as the car has been properly maintained your engine will still be spotless inside, also your car does not have a CDV and the clunk in the rear is most likely the rear diff bushing but in my case it was one of the subframe mounts was torn out so its a good idea to take a look, also the noise while turning could be alot of things but it sounds like it the power steering pump about to go out.
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Old 07-04-2009, 08:32 PM   #293
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ok thanks guys.. I'll take a look into all those things. I changed the tranny fluid and did coolant change earlier and its running a lot smoother, especially shifting, royal purple ftw. lol, also my temp would go just a hair past 12 oclock and now it stays steady no matter what thanks for the help!
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Old 09-08-2009, 06:33 PM   #294
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seafoamed my extremely sludgy engine.....very little smoke

I'll start off by saying my engine has a sludge problem. I discovered this while doing the VANOS, unfortuntely. Looks like the previous owner used cooking oil instead of motor oil

Anyway, I seafoamed my engine for the second time today and it smoked a little bit, but not nearly as much as I would expect for so much sludge. I've seen videos of people smoking up the neighborhood with properly maintained engines, I figured I'd have a little more of a smoke show. I' put half a can thru the brake booster hose, a quarter in the oil and a quarter in the tank. What gives?
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Old 09-08-2009, 06:37 PM   #295
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I don't think you're going to find a product that you can just pour in the crackcase/fuel tank that will get rid of your sludge problem.

I tried this stuff one time and had very little smoke. I opened up my engine a couple of months later and it looked brand new. However, I'm not going to give Seafoam the credit...
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Last edited by zhp pilot; 09-08-2009 at 06:39 PM.
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Old 09-08-2009, 07:09 PM   #296
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This can be bad, Just be very careful as ive heard of it chucking off and plugging the oil sump and then ahh..... well you know.
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Old 09-08-2009, 07:13 PM   #297
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+1, I have a love, hate relationship with SeaFoam. I would never use it in the oil after it took my 6 month old turbo out. The gas tank and intake is fine.

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Old 09-08-2009, 07:27 PM   #298
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just change the oil alot more often...pretty much none of the "sludge removers" work
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Old 09-08-2009, 07:30 PM   #299
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This is one instance I would recommend m1 0w40 and frequent oil changes. The oil cleans too well and is suitable for this kind of thing. I would not use the oil for a normal healthy engine as the oil does not give a sufficiently thick film to protect and to seal. There's no need to pour anything special into the engine. Just run it normal and let the oil do it's job. Short of opening up the engine and soaking it in degreaser, this is going to be a slow process. So you shouldn't expect miracles. In any case the engine already has and will continue to run quite normally with the sludge. There's no need to rush it by using this or that potion and risk killing the cat, the engine rubbers, or sensors.

Last edited by GoingNuts; 09-08-2009 at 07:35 PM.
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Old 09-08-2009, 07:36 PM   #300
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I've used Seafoam in my boat outboard (2 stroke) and killed most of the mosquitoes in Upper Wisconsin for a season with all the smoke that came out after 3 runs of premix 25% seafoam. That is the carbon burning off the pistons. Did it work yes, it burned off the carbon as the old timers said it would and increased my top end speed by about 5 mph with a 50hp 1972! That said, I never heard of seafoam curing motor sludge? Maybe it does, but doesn't the brake booster hose feed into the combustion chambers through the intake? If that's true, you wont be doing anything for your oil?

Just a thought,

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