SeaFoam - How Often?
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
Every other oil change would be more than enough so it would just be throwing money away. 1/3 in your brake booster line, 1/3 in your oil, and 1/3 in your gas tank. Let it run through the system and promptly change your oil/filter. I don't know of any negative effects other than it being close to ten dollars a can...Maybe every 10,000 miles or once a year?
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Every other oil change would be more than enough so it would just be throwing money away. 1/3 in your brake booster line, 1/3 in your oil, and 1/3 in your gas tank. Let it run through the system and promptly change your oil/filter. I don't know of any negative effects other than it being close to ten dollars a can...Maybe every 10,000 miles or once a year?
Thread Starter
Drifting
Joined: Oct 2006
Posts: 1,694
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From: Beaverton Oregon
Melting Slicks
Joined: Dec 2006
Posts: 2,308
Likes: 104
From: Orange County California
What should I do if, when I turn it off and try to drown it, the engine stays on and starts dieseling and shuddering. That happened last time I used SeaFoam, so I quickly restarted it for half a minute, then it shut off. But then, I think I lost the "final coverage" of pouring it in while shutting it down.
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
If you put it thru your oil, change your oil afterwards. Don't wait. I would estimate 20 miles would be OK to drive with sea foamed oil but I personally, change it before the car moves. Just my expereince with it. I have poured it thru the brake booster(vacum line), oil, and gas tank. It does run a little smoother and some smoke did come out. Last tip, be careful not to pour to much sea foam to fast thru the vacum line because you risk hydrolocking your motor.
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
What should I do if, when I turn it off and try to drown it, the engine stays on and starts dieseling and shuddering. That happened last time I used SeaFoam, so I quickly restarted it for half a minute, then it shut off. But then, I think I lost the "final coverage" of pouring it in while shutting it down.
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
Why would you not use it in the oil? I have with no ill effects. I am curious as to why you say no.
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Melting Slicks
Joined: Dec 2006
Posts: 2,308
Likes: 104
From: Orange County California
I am deeply confused with your post. Keep the car at 2000 RPMs and SLOWLY pour it thru the vacum line. It should stall. Let it sit for 15 minutes then restart it. You shouldn't try to "drown it" or pour it in while your "shutting it down". If you cut the car off then poured seafoam in it, that was incorrect. Could you explain your problem in more detail?
Thanks for the help. I'm about to put it in while at work my smoke show is away from the house.
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
There are so many posts in here about SeaFoam. Some say let it sit 15-20 minutes; some say let it sit overnight. Some say put in 1/3 can, some say put in a full can. When mine was dieseling, it was based on recommendations I read that said, as it stalls, turn off the ignition, and put in that last bit quickly right at the end." My engine really didn't stall out...even before "that last bit."
Thanks for the help. I'm about to put it in while at work my smoke show is away from the house.
Thanks for the help. I'm about to put it in while at work my smoke show is away from the house.
I did not want to bring in my *personal* experience. I was just relaying the proper information and techniques out on the board. Don't let it sit overnight. 15-20 minutes is fine. It's only going to get so clean no matter how long it sits. Overnight is just way to long IMHO. Stick to the instructions on the can and everything should go smoothly. Some people think that instructions are for geeks to read.
Last edited by M.J.L.; Mar 20, 2009 at 01:02 PM. Reason: grammar
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
I fill up the tank before I put it away and dump 2 cans of the stuff in it. Other than that, I don't use it. I have little faith in these "cleaner in a can" things. I believe in taking the injectors out at a certain interval and having them tested and cleaned.
Team Owner
Joined: Feb 2006
Posts: 24,460
Likes: 7
From: sw Ohio
oh yeah it smokes a LOT. just put ur car in plain view so everyone knows where its coming from.
Team Owner
Joined: Dec 2007
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The fire chief lives a couple houses down from me, he would go 
Last edited by pologreen1; Mar 20, 2009 at 09:50 PM.
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Safety Car
Joined: Jul 2008
Posts: 3,966
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From: Made In America
St. Jude Donor '10-'11
It's the black hose on the brake booster on the drivers side. Put your hand on the brake booster. See that thick tube? It's a vacum line. Remove it from the brake booster and pour it in thru that to clean "Sticky lifters, caked up gunk, ect"
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
I don't follow. That leads to the manifold. So, if you think it cleans gunk on the valves, fair enough. How does it do lifters unless you toss it in the oil??