I have a 2002 Eb Expy with 86k on it. I just took it to the dealership to have two COP's replaced, thank god for extended warranties. While there they of course suggested a $548 "minor" tune-up. They said they would change the plugs and do a fuel system flush, mind you $548. I have read many things about this "seafoam" product and I get the basic jist of its uses. But my question is, I hear people saying they suck it through there brake booster line, what does this do for the motor? Where does it go in the motor? I understand adding it to your fuel. What about adding it to the oil? Just a little clarification would be awesome.

 

seafoam is fabulous stuff and even better priced. In extreme situations I would recommend multiple uses but for you I'd say you be ok with one treatment. I just bought a 75 ford a few weeks back, carb'd was so gummed up it was kickin an bucking an backfiring an wouldn't idle at all.....one treatment of seafoam it fires on the first crank every time now and hits right to an idle and revs out near perfectly. Ive used for years and my experiences just keep getting better.

 

I think that "Sea Foam" is an outstanding product. Maybe it removes the carbon build up on plugs as well as water from the fuel system.

It is probably just coincidence, but I had a an few extra bottles (I purchase 5 or 6 bottles at a time as I normally fill up the boat in the morning close to the lakes I am fishing) sitting in the back of the Expy and I decided to add it to the trucks fuel (through the fuel fill), and the next morning my truck failed to idle and would just die after starting unless I used the gas pedal to keep it running. This is the first problem I had with my Expy..and you don't forget your first . The garage replaced the sensor and it hasn't been a problem. I still add it to my fuel, but once every 6 months, I haven't actually seen it do anything in my truck, but I "imagine" if there is any moisture build up this stuff that has worked so well on my other motors can't be too bad in my Expy. .

I'm not a mechanic…and I even reported a problem that I associated to bad gas, and it took a transmission reconstruction to fix the problem…should have added it to my transmission (just kidding) .

I don't believe in a "Fix-it-all-product" and I have never used it for anything but in my fuel system (adding it to the gas), but I have read the label and it appears you can add it to just about every where (crank case, etc).

I add it to my fuel/Oil mixture on my Mercy 175+Hp outboard motor, and noticed better idling (which is important to prevent the motor from dieing on me-when I pull into a boat slip and don't want to run into the other end when I put it into reverse to stop forward motion ). When I had a smaller motor (120HP) on the same boat, I noticed a the best top end speed of 33mph, when previously I was only able to get 31. So I am a firm believer in this product… just too bad I can't get it at Wal-Mart, as I always add it to my boat's fuel system.

I had some problems with my lawn mower engine (not running soothly..rev up, rev down), and I added a few caps full to the tank, and it ran perfectly. Although, when I store the mower in the garage and not empty the tank, there is a much stronger 'gas smell' (so it is doing "something" to the fuel) permeating in the garage.


2001 Ford Expy XLT 4x4 with 133K miles on Engine and 321 miles on reconstructed transmission (79 more miles to go and I'll be able to tow my boat again)

 

The seafoam through the booster hose is to remove carbon from the intake and pistons. The vacuum hose goes strait into the intake and the seafaom goes into the combustions chambers at a higher concentration than putting it in the fuel tank. After you empty the can, shut the vehicle off for at least a half hour. Then start it back up, and you will get LOTS of smoke, and I mean LOTS coming out of your tailpipe. Thats all the carbon going byebye.
Hope that helps

 

I appreciate the responses, but when I suck it through the line do I need to change the oil after I let it run? I would assume so, but just want to clarify.

 

it shouldn't come in contact with any oil- the brake booster line goes directly into the air passages of the intake.

 

I've never changed oil after a Seafoam decarb. The seafoam stays in the combustion chamber and does not get into the oil. I have done this procedure many times on many different vehicles. I just did a Honda civic over the weekend with no issues. It runs awesome now.

 

So then it will just burn off and exit through the exhaust?

 

yes it will

 

Awesome. Thanks you guys. That helped a ton.

 

Some of it does in fact get into the oil, SEAFOAM is a solvent, it dilutes carbon and it also dilutes oil. This solvent can leak past seals and rings, not a whole lot, but could be enough to dislodge carbon chunks that don't burn; couple that with a small, unprotected metal to metal area (with oil diluted) and you could possibly add extra risk if you don't change the oil after the procedure. It can't hurt to change the oil.

 

I see your point. Like I said, I have never had that issue, so I never made it a point to change the oil after a decarb. I might start now.

 

I'd have to agree with this thinking. Not too tough to coordinate your oil change schedule with a shot of Seafoam.

 

you can also add seafoam to your crank case to celan it up so the bottle says

 

I'll bet it makes a good mixer too at your next party.