another satisfied seafoam user
Joined: Jul 2002
Posts: 7,301
Likes: 3
From: District of Columbia
Try sticking a vaccume hose in the can, that's how to get seafoam to work!
http://www.nopistons.com/forums/inde...howtopic=60489
http://www.nopistons.com/forums/inde...howtopic=60489
I think (and correct me if I'm wrong) that sucking the SF in through a vacuum line is mainly for boinger engines. This is for the cleaning of the valves and such.
Once a year I'll use a full can with 1/8 tank of gas. 1st time I did this, I drove it hard for a few miles and suddenly felt a HUGE burst of power. I figure I had a stuck seal or something. Works for me...
Once a year I'll use a full can with 1/8 tank of gas. 1st time I did this, I drove it hard for a few miles and suddenly felt a HUGE burst of power. I figure I had a stuck seal or something. Works for me...
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Originally Posted by Kentetsu
I think (and correct me if I'm wrong) that sucking the SF in through a vacuum line is mainly for boinger engines. This is for the cleaning of the valves and such.
Once a year I'll use a full can with 1/8 tank of gas. 1st time I did this, I drove it hard for a few miles and suddenly felt a HUGE burst of power. I figure I had a stuck seal or something. Works for me...
Once a year I'll use a full can with 1/8 tank of gas. 1st time I did this, I drove it hard for a few miles and suddenly felt a HUGE burst of power. I figure I had a stuck seal or something. Works for me...

You can put sea foam in the oil OR the gas. Thats what makes it so cool, it is just a strong detergent, THAT ACTUALLY WORKS!! I would suggest changing your oil getting a K&N oil filter as they work wonders, and Changing your fuel filter. Seafoam is around $7 I think and a K&N oil filter is almost $10 but they are worth it! The K&N oil filter filters extremely small particles, and in our rotaries that is a very good thing. Seafoam is what I use for everything, although I am strongly considering switching to Lucas. Lucas seems to be a better product to me....
IMO seafoam is the best damn thing to use to clean your anything. ive used it in my fuel system and running it though the engine , have also used it to clean the outside of the engine, works really freakin good.
I have used sea foam in a number of cars but I don't think I would drive around with it in oil. I normally put some in the oil. Start the car and let it idle for 5 min then change the oil. IMHO and according to the warning on the side you should not drive around with sea foam in your oil.
it just basically cleans up, gets rid of the gunk sitting gas makes or any type of build ups. it cant hurt an engine from my experiences just make it better. it will hurt the gas tank though, loosens the rust on it meaning you will probably have to change the fuel filter.
So would you guys rather use Seafoam before MMO? I put almost a whole canof mmo in my engine and it still didn't seem to work. There is either carbon build up or anapex seal is stuck imo. Which one do you guys prefer to use?
Seafoam is great for getting the fuel system cleaned out, not sure it does a lot for the rotary when you put it in the oil unless it helps free up some sludge or clean out the oil cooler so it's bit more efficient. In a boinger it will definitely clean the valves and valve train. i 've used it on boingers before with positive results, smoother idles and what not. Just don't leave it in the oil for very long as it thins the oil and I'm sure deteriorates the oils capacity to lube the engine and over time could harm more than help. I run it in a tank of gas on my 7 every once in awhile, maybe twice a year.
Joined: Oct 2005
Posts: 1,329
Likes: 8
From: SF Bay Area, California
i believe you can pick up SeaFoam at Pepboys or Advance. i never used it but have heard of good results everytime somebody uses it. i also heard it leaves a residue in ur engine but doesnt everything? i might try this someday... will it foul the spark plugs or anything? how do i put it in the valves?
Joined: Oct 2005
Posts: 1,329
Likes: 8
From: SF Bay Area, California
thats what i was thinking!! im like what are valves? whats a valvetrain... did he mean drivetrain? if there are valves in a rotary are they the rats nest vaccum line valves or something? hahahaha i have no recall of pissed-on engines anymore hah. boinger = piston hah
To clear some things up, I have dealt with SeaFoam for over 4 years with personal experience and other suggestions. In piston engines, you can put it in oil, gas, and have the intake suck it through. I love doing the intake because I get to see that huge white smoke screen come out of the tail pipe.
As it has been said before, it's universal. Put it in the oil, it won't do any damage (to a piston engine anyways, I'm new to rotaries), put it in the fuel, helps the cleaning of the injectors internally. Have the intake suck it in to clean the deposits and whatnot inside the engine. Sticking it in the oil, it acts as a detergent to clean the passages and the oil pump.
Unfortunately, I have done it to my rotary yet. Why? Because I've read on here that having the intake do it may cause problems since it isn't a boinger. Then, it just slipped my mind.
Now, I HAVE heard that it might require for you to change your spark plugs after the intake cleaning because it may leave residue on the spark plug heads. However, I have done the intake cleaning and not change my plugs. Haven't had a problem before.
Glad to hear that you had a good boost of power after sticking it in the gas. I'll remember to pick some up this weekend.
As it has been said before, it's universal. Put it in the oil, it won't do any damage (to a piston engine anyways, I'm new to rotaries), put it in the fuel, helps the cleaning of the injectors internally. Have the intake suck it in to clean the deposits and whatnot inside the engine. Sticking it in the oil, it acts as a detergent to clean the passages and the oil pump.Unfortunately, I have done it to my rotary yet. Why? Because I've read on here that having the intake do it may cause problems since it isn't a boinger. Then, it just slipped my mind.
Now, I HAVE heard that it might require for you to change your spark plugs after the intake cleaning because it may leave residue on the spark plug heads. However, I have done the intake cleaning and not change my plugs. Haven't had a problem before.
Glad to hear that you had a good boost of power after sticking it in the gas. I'll remember to pick some up this weekend.
alright the oil is getting changed this weekend...I put the seafoam in my gas+oil..I had forgotten how kentetsu used it in his posts..but im feeling no harm has been done..she is running very well..around here you can only pick it up at a napa auto parts store..about $7..great stuff




