Hello all..

So, I've done as much research as I can on this subject and after reading some mixed reviews I thought I would get a general opinion as to if I should perform the Seafoam service to my car.

Car is 04 sedan 5AT, 132k miles, I have done all scheduled maintenance with factory spec parts at the recommended intervals (trans, coolant, diff, oil changes, etc). I changed the spark plugs at 60k and have 6 new ones waiting to be installed (after I decide to do this or not).

The car does not get driven hard, it mostly is used to drive me around town for sales appointments during the day. I do not beat on it, as I intend to make this car last (plus the 5AT doesn't quite perform like it used to) I have no issues with oil consumption and I get an average of 20-21 mpg.

Should I do this service? I have used Techron in the past and it seems to make a marginal improvement. I am due for oil change and spark plugs, so this would be the ideal time to do it.

What do you think? Thanks for your advice..

 

If your car had a crap ton of miles on it I would say go for it. It seems that you take good care of your car but if you do decide to do it keep this in mind. This stuff is very aggressive and that's why it can f' up your engine if you don't follow the directions and recommendations of the product. Read the label very carefully and only use online guides for reference and not as a step-by-step.

A few things I remember from when I used it on my '98 Camaro Z28:

-Poor the recommended amount in your gas tank.
-Poor the recommended amount directly into your oil.
-Poor the recommended amount quickly into a vaccuum hose while the car is running, please read directions or see a how-to on where to insert. You want the car to die out after the seafoam is inserted into the hose. The reason for this is so that the seafoam works its way down from the top, breaking down all carbon deposits. Do not let it sit more than directed on the label.
-Reattach the hose and start up your car. It may have a difficult time starting but do not be alarmed. Get it to start and commence to drive your car "hard". A blue smoke will exit the exhaust tailpipe, but again do not be alarmed.
-Use only for the recommended amount of time or mileage. I drive for about 50-75 miles to get a good cleaning. Drain the oil.
-I typically use cheaper oil for the refill just because I realize that some of the seafoam may remain and I'll change the oil again after 1 week (300 miles).
-If your car had a lot of buildup, you may end up fouling your plugs and or oxygen sensors. Typically, it is just plugs.
-Don't forget to record the smokeshow after you start it up.

Think of this stuff as Drano. It can leave your pipes nice and clean. If you let it sit, it will eat through the system (metal, gaskets, etc.) and leave you wishing you had never used it.

 

Well, it's done... drove 5 or so miles until i saw no smoke, will drive another 50 or so tomorrow before changing oil, and then new spark plugs go in..

It was a lot of fun smoking up the streets! I wish I had a switch to turn on that smoke all of the time!

http://youtu.be/TUsc06n7z1U

 

Lol, I did it too a couple of months ago.. Saw an improvement in gas mileage! Pretty sick product

 

I have never heard of anyone use seafoam and have issues, only people online having problems.
I worked at a parts store for 4 years and never heard of anyone having any problems using seafoam.
Whether they put it in the gas tank,mixed with the oil or in a vacuum.

I used it in my old BMW E30 and I had no problems.
Used in my 96 chevy, no problems.
07 chevy 1/2 ton, no problems.

The problem lies when people use to much at once.

 

I am in the same boat as you. I change differential, tranny oil, and coolant every 30k miles. Just change the spark plug early this year. I got 152,000 plus miles right now. There were many times where i wanted to do seafoam, but was just too scared to. Don't know if it will do more harm than good. Since its actually cleaning out all the deposit that is holding it together.

 

I'd like to do this, but I'm pretty intimidated by the whole thing. Are there any videos or picture writeups for this?

 

There are tons of videos online showing people using seafoam.
I dont think there are to many G35 specific videos but I do remember seeing a few.

I would not use the can as your method of measurement.
I would measure the amount you need in a separate container and then use it.

 

I used old pyrex measuring cup to portion out 1/3 of can to gas, oil, vacuum line. Seemed to work ok.

I just changed spark plugs, haven't done that since 60k and plugs looked pretty good except whichever cylinder is closest to the driver seat. Lots of oil. I hear this is relatively normal and not a huge issue.

Car seems to be running pretty well after seafoam, oil change and plugs. I wouldn't say it was a dramatic change but does seem to run a tad smoother and pull a little harder.

 

I have used Seafoam for over 25 years in every machine I own that uses a spark plug. I have never had a problem with any of my engines - cars, trucks,lawn mowers, snowblowers,weed wackers, chain saws,etc.. With the da--m ethenol in gas I think it helps.