Long-Term Effects of Seafoaming?

[N35QU!K]

I just bought a can of Seafoam today, and I was just about to put it into my car via intake manifold vaccum line, just like Svanzy Ya did, and my dad is trying to talk me out of it, warning me of the "long term negative effects of seafoaming". assuming such effect exist.

So my question is, are there any long-term negative effects to seafoaming?

[marc780]

My opinion is it is bad to pour ANY liquid into your intake manifold. My reasoning is that the engine is designed to run on fuel in vapor form and not liquid. to dump any kind of liquid into the combustion chamber is to risk damaging the pistons and valves because they are not designed to run on fuel in this form!

I do use Seafoam once in a while and believe its pretty good stuff too and really seems to clean inside the engine well enough without actually tearing it apart. But when i do use seafoam through the brake vacuum hose, i just spray it in using the canned Seafoam (its the exact same stuff). If all you can find is the liquid kind, i would pour it into a plastic spray bottle from Walmart or 99 cents store and pump it into the engine using that.

remember Seafoam is a powerful solvent - so if you plan to reuse the spray bottle, return the unused liquid to the can and rinse the spray bottle and sprayer with water. Because the seafoam might melt through the plastic if you leave it in there long enough.

(I'm not sure what your dad means by "long term effects" but i agree with him not to dump liquid in the engine. Maybe he is thinking that it could get in the oil and dilute it and maybe damage the bearings if you use too much at one time, or something like that. But like i said, i agree with his logic.)

[Venom_5]

there arent any harsh long-term effects

however it can foul the spark plugs and clean off bad seals, leading to leaks since they were held together by sludge/gunk

[N35QU!K]

My dad finally gave in. However, he had me stick a bic pen cap, the kind with the holes in the top, into the vaccum line to sort of create a spray effect to avoid any large liquid mass to build up in the engine, a smart idea if you ask me. The engine didn't stall at all

The seafoaming went really well; i could really feel an improvement in the acceleration. After reporting the results to my dad, he asked me to do the same thing to the van :P

Thanks for all the info guys

[exodiaus]

This stuff is pretty amazing. I remember when i bought the car, there were this check engine light on so i scan the code and it give me p401. After i seafoamed the car, the check light suddenly disappear and never on since. Go Seafoam!!

[blackhawk]

nice cos i was wondering what are the effects of it tooo

[nodrogkam]

actually back in the day they used something more intense than seafoam, which was hooked directly to the fuel line...but thats another story.

when used in moderation the stuff definately does more good than harm - simply follow manufactures instructions and you shouldnt run into a problem.

Another way to look at it is that one can should do 3 cars if you're only using it through a vacuum line.