I was just curious to know if anyone has ever used this stuff before to "clean" the engine internals?

I just used it on my Subaru Outback cause it's old and has 151,000 miles on it and I read on the Subaru forums that many use it and it's great stuff. So I ended up trying it out over the weekend on the Subaru and it seems to have done something good. The engine seems to run more smoothly.

What do you guys think of this Seafoam?

Andre

 

I've heard that you should only use a little, and change your oil frequently for the first few thousand miles after. At least check that the oil is in good shape after using Seafoam.

 

I use it. It's good stuff. I'll do it again around 70,000.

I put 2/3 in the oil about 1000mi from an oil change, then suck up the other third into the combustion chamber, cut it off for 15min, then idle it until the smoke is gone, maybe run it around the block a few times. Then I change the spark plugs, oil, oil filter and enjoy the new found like in the car.

 

I've used it in my MR2's. It does clean out carbon deposits. I've always done it before I changed out my plugs. FWIW some have people on other forums have reported issues with fouled spark plugs and O2 Sensors on cars. I've never had this occur to me. I've definately noticed a difference on my MR2's, but they each had over 100k at the time I seafoamed. Not sure if it would help much on a lower mileage car.

 

I have seen them destroy 02 sensors... if honda says no, so do I.

 

I heard that too, it's clogs Catalytic converters something about carbon deposits killing the o2 sessors. Hmm I guess that stuff is hit or miss

 

Seafoam breaks up carbon buildup and gunk in your engine. Most people use synthetic oils and don't have a buildup problem like regular dino oil has. If you use it, just keep an eye on your oil and change it frequently afterwords.

One thing people get worried about aswell is what this can do to your rings. Oil starvation or cavitation because it will thin your oil and could break loose little chunks of carbon killing your rings or sleeve.

Because of what it does, it WILL kill your cat and o2 sensors. Disconnect your exhaust and remove the o2 while you have it running.

I haven't read anything about what Honda has to say about seafoam, but if they just warn about killing o2's and cats...then no biggie have fun blowing out white smoke for a bit...lol

 

I actually wasn't thinking about changing the oil since the seafoam wasn't placed in the oil. I don't see how the Seafoam would work its way down to the oil can if I'm putting the Seafoam in the intake manifold.

The only time that I heard about changing the oil is if you pour it into the oil filler. You're supposed to warm the engine up, pour the stuff in and let it sit there for a while. Then you change the oil out and most of the gunk falls out then. Some even flush the oil can out buy pouring oil into the filler while having the drain plug unbolted.

On the Subaru I figured I'd try it out since so many brag about it, but I was a little worried about doing it in the S2k.

I might have to try this out next time I change out my plugs.

Andre

 

Sorry for the hijack...But I'm just curious;

You still haven't updated us on what the problem was with your VSA deactivating from the other thread, Andre? I'm curious to know what it was?

 

I used it once around 80,000 miles. I didn't put it in my oil or gas, but I ran it through a vacuum hose into the intake manifold.. it puffed a lot of smoke so it looked like it cleaned house. I didn't really feel any difference though.