Seafoam motor treatment, should you use it? How should you use it? – Auto Information Series
100 Comments


Now for a Video that many of you have been waiting for. I say that because a lot of people ask about this on various forums and some viewers ask about it. The topic is… Sea Foam, should I use it, how do I use it, how do I know if I need to use it, stuff like that. Simply put, Sea Foam is an additive. There are many additives out there for oil and fuel, fuel injector cleaners, oil stabilizers, Marvel mystery oil mix, all these types of things and when this subject comes up, the Sea Foam topic, the first thing that comes to my mind is… aggressive. All of the things I read on the container, all of the things I hear people say about it, all of the results people claim they get from it, plain and simple, it is an aggressive tactic to use when trying when trying to clean out deposits in the fuel injection system and inside your combustion engine. Here is my car, I know how it has been serviced and maintained, I know that the oil have been changed regularly, I do not believe that I have any gunk or sludge inside my motor because I change my oil often and I use high quality oils, therefore, I do not believe that it is necessary for me to add Sea Foam into my crankcase, to try to clean out deposits. When you read the information on the can, what it does and the benefits that you will gain after you use it, it claims over and over again, due to build up deposits, due to deposit build up, due to a build up of deposits, bla, bla, bla, due to deposits, etc. Therefore, if there is no reason for your car to have deposit build up, I do not think it is necessary to use something as aggressive as Sea Foam to try to clean out the inside of your engine. In the owners manual of your vehicle, it recommends using oil that meets certain specifications. When you look at the seal on the back of your oil container, it will list certain specifications that it meets. It will also list certain things in the product as a standard. In all modern day engine oils, these oils contain detergents. These detergents are part of the oil package, different with various kinds of oil and these detergents are designed to clean the inside of your engine while the oil is cycling through the engine. So when you open your oil filler cap and look in there, you can see oil and if it looks dirty or clean in there. As you can see, I have a little bit of residue on the parts inside my oil cap area but it is not a build up of sludge or something that can be scrapped off with a metal object or anything like that. I can not see any sludge in my engine. Sludge usually builds up in the engine as a result of failing to change as recommended or scheduled oil change intervals. There are 3 primary ways to use Sea Foam, as a deposit build up remover. #1 Is pouring a can of this into your fuel tank. The label states that 1 can will treat between 8 – 25 US gallons. Therefore you need to have at least 1/2 of the fuel tank full, 3/4th would be better. Empty the entire contents of the bottle in the fuel tank and it will lubricate the fuel system, the fuel injectors, clean and lubricate the valves, and remove carbon build up and other types of build up debris that may be inside the fuel system or the passages of the engine that fuel will touch. Since it is in the fuel tank this will touch everything that fuel touches. Another way that this can be used (#2), you can pour it into the crank case, into the oil system as a crank case cleaner. That means that you remove your oil cap and pour 1-1/2 ounces of this in the oil system per quart of oil. So, if your engine holds 4 quarts of oil, you should pour 6 oz of this in the crank case. You can do it before or after an oil change. I have read about people putting this in their crank case, then the container states that you should change the oil once it becomes dirty, so you may drive 50 miles, maybe 100 miles, at any rate this product will be stripping the inside of the engine and oil passages of carbon build up or sludge build up and once that oil is dirty/contaminated with those deposits, change the oil. I have heard of people adding this to their oil driving 10 or 15 minutes and leaving a cloud of smoke everywhere they drive in the process. Then they change the oil to remove the contamination and sludge that has been stripped. Again, if you are going to use Sea Foam as a crank case cleaner, add it as outlined on the instructions 1-1/2 ounces per quart of oil, drive till the oil is dirty, then change your oil immediately. If I were to do this, I would change the oil with in-expensive oil, drive another 100 miles, change the oil again. Drive 1,000 miles and change the oil again. Hopefully those 2 or 3 rapid oil changes will get most of the sludge and other debris that the Sea Foam freed up out of the engine so that your car can resume a normal maintenance schedule. The 3rd and final way that Sea Foam can be used is to allow the fluid to be sucked into the engine while it is running, through a vacuum port. There is a special caution on the label that if you let a vacuum port suck this Sea Foam into the motor, make certain that the fluid will be sucked across all of the cylinders, and not just one bank. Example, my car is an inline 5, I have a vacuum tree here behind my throttle body. I can remove one of the capped ports, connect a vacuum hose to it, put the end of the hose into a measured container of the Sea Foam liquid, allow it to be sucked into the intake and it will reach every cylinder. If you have a V6 or a V8 engine, you will need to insure that any vacuum access that you decide to use, it will need to apply the Sea Foam across all of the cylinder, not just 1/2 of the engine, 3 or 4 cylinders. This container has 16 ounces, the instructions STRONGLY URGES that you only use 5.33 ounces of it to be sucked into the intake system. You should measure out about 5.33 ounces of it into a separate container, access the vacuum that you plan to use, start the motor, and let it suck it in the engine while it is running. Anywhere that the air travels in that intake system the Sea Foam will be sucked into, hopefully stripping away any deposits and carbon build up and other things that will be in its path of your injection system, valves and other areas. It claims to be harmless to your o2 sensors and exhaust so it should be safe to do that. Those are the 3 ways to use Sea Foam. Again, I repeat, Sea Foam is aggressive. There are other additives and things that you can use that should do the same job at a less aggressive rate. If you need aggressive results, use Sea Foam. If you do not need aggressive results, use some other product that is not as aggressive. I use Lucas fuel injection treatment to clean my fuel injectors and fuel system. I have read of other oil treatments that people put in their motor but remember, if you are going to do something that aggressively removes deposits or sludge, be prepared for the results that it gives you, having sludge and debris floating around in your engine until you get it drained out. Hopefully it will NOT clog any small ports or get stuck anywhere while it is loose. Just a recap, Sea Foam will NOT fix parts. It WILL NOT repair a burnt valve. It will not fix a fuel injector that has a failed pulse or electronic part. It is strictly designed to clean deposits off of parts inside of the motor, fuel injectors, valves, rings, pistons, stuff like that. It should also remove sludge in your crank case. Again, it will NOT fix broken parts but it will aggressively clean and strip parts in the engine. In my opinion, the best use of Sea Foam is under the following conditions… If you have a vehicle that has been sitting in excess of 90 days and it has old fuel in it, fuel that you do not want to pump out, pour a can of Sea Foam in there and let the Sea Foam stabilize that fuel, help it go through the fuel system. Another good use would be, if you have evidence of sludge in the motor, or you know that the previous owner did not maintain the vehicle properly. You drain the oil and it seems thicker than it should be, it looks extremely dirty or the vehicle has been sitting in excess of 2 years or something like that. Those are good examples of times that you probably should use Sea Foam. If you have any questions, feel free to post them. If you believe that this video was useful, please LIKE IT and SHARE it with your social media friends. You can SUBSCRIBE to my channel so you can get notices of my future videos. Please visit my channel, I have all types of videos there. You can leave questions here and I will try to answer them as soon as possible.

100 thoughts on “Seafoam motor treatment, should you use it? How should you use it? – Auto Information Series

  1. Im pretty sure my car was abused no oil changes on time and the oil was totally black when I bought it and it was running noisy and was down on power even after I did a harsh flush on the engine, I sucked some into my vaccum line, poured some in my oil and some in my gas and its running so quiet and smooth now I'm really impressed, if only the previous owner had changed the oil on time LOL

  2. I got carbon build up on the piston tops. Not sure yet on the valves. My intake is very clean my heads are very clean too. I had to clean my plugs cause they were carbon too. they are new plugs. it has new fuel injectors an fuel pump. I know the car running rich. I adjusted the timing because the timing was wrong from the last mechanic who worked on the car. exhaust leak I'll be getting exhaust fix putting a new egr valve on changing the valve cover gaskets and oil pan gaskets. The oil in the motor always stayed maintained from the previous owners. So no problem there. What is your recommendation on the carbon for the piston tops. car does run alot better since I redid the timing and cleaned the spark plugs.

  3. used on 350 crate motor… the TBI was cleaned too well..sticky throttle from off idle…
    recommendation for "lubrication " of the butterfly valves???????

  4. Bought an '08 Lincoln MKZ w/122K odometer. Oil hadn't been changed in 7500 mi and looked dirty, dealer changed it for me (side note: His guy used 5w30 instead of 5w20 as owners manual suggests, I guess that's fine?) Car runs well but maybe idles a little rough. Changed engine air filter today (was very dirty) and considering adding SEAFOAM. I have no idea if car needs tune up.

  5. Would this clean an intake runner valve? Think mine is stuck and the air ratio is off, making it use a little more gas. Its a Dodge Avenger 08 4 cylinder

  6. The best way I've found to use seafoam to clean the engine is to do it when you're about out of gas, when the tank is almost empty: suck about half in through a vac line and let it stall out, seal the vacuum tube back up, pour the rest into the fuel tank, let it sit 15-20 min after stalling it out, crank it up and drive it like you stole it Ricky Bobby. You'll be running a higher concentration through the injectors and fuel lines to clean them better, and the hard driving will burn off the crud from the valves. After it quits smoking fill the tank. You don't want your pump soaking in seafoam because it can eat the seals up.
    Best done on a chilly and windy day when the neighbors don't have their windows open

  7. Gasoline is a very destructive fuel in many different ways. Gasoline is extremely dirty and pollutes our air and deposits sludge and carbon buildup in our engine. That is a known fact. But anytime someone brings up the idea that there is 10% of ethanol in our gasoline all of a sudden the destructive forces of a mere 10% of ethanol humiliates the 90% of gasoline blend in our fuel. Gasoline at a 100% can go bad just sitting in the sun. Why do the experts recommend putting stabilizer in our yard equipment tanks for the winter preparation? Because of the ethanol? Nope because of the gasoline. Gasoline all by itself doesn't need any help from ethanol to go bad all by its lonesome. By having a blend of 10% ethanol and 90% gasoline the refineries use the ethanol to bump up the octane. Yeah here ethanols octane is much greater than gasolines so refineries can put more bad things into gasoline because the ethanol becomes a cleanser and a higher octane fuel running cleaner and cooler in a combustable engine. Gasoline is dirty and we should be given a cleaner fuel option. Yeah there's electric great for TESLA. But we do have an alternative fuel and it is ethanol. Not methanol which is also an alcohol and many times called ethanol. Ethanol the plant based alcohol not the waste or landfill methanol which is also an alcohol. Henry Ford built the Model T to run ethanol. Why? Because his customers were farmers and he wanted to give them the ability to fuel his automobile with something they can make on the farm which is alcohol. Yeah this alcohol that a human being can drink quite liberally. The alcohol we call today ethanol made from corn. The oil industry cannot tolerate a fuel alternative that anyone can make at home with corn or sugar and water and yeast. Yes our automobiles can run on ethanol with a modification. Flex fuel vehicles have this modification. Oh by the way Brazil has 3 kinds of combustable fuels: gasoline and gasoline blends and 100% ethanol. Here in the United States we only have 1 fuel option. It's a real dirty word.

  8. Thanks Robert for this info.
    For my 2001 Land Rover Discovery's fuel system with 102K miles, I've tried SeaFoam, Berryman's, Royal Purple (the WORST!), Lucas and BG 44K. I prefer and have seen great results using 44K in the fuel tank every 3 months. It's a little more expensive but I like it.

  9. I hav ea 2004 Saab 95 that has 160000 miles on it. Can I use this on a turbo engine? I changed the oil about a month ago when I first bought it, and the oil that was in it was pitch black, telling me that it has been a while since the previous owner that had it. It uses 0W 5=30 synthetic oil, and I put that in it, but I used the wrong filter, the orange can of death, a Fram non synthetic filter, plus I did not do it warmed up, forgot to. It has a ticking sound coming from number 1 cylinder. i used a stethescope to find it. Im assuming that is because I did not change the oil right, and used the wrong filter, the orange can of death that I hear. Im gonna change the oil again the right way this time with the synthetic filter, so can or should I use the seafoam, or will it mess up my turbo, which I have heard also? Also seen on Scotty Kilmers channel that Seafoam is for 2 stroke engines and not 4?

  10. I wonder if this guy knows that that thing under his hood is NOT a motor, it is a ENGINE. Motor-Engine, yea they are two different things. sound advice from a guy that thinks he has a Motor under his hood.

  11. I have a 2005 chevy suburban 1500. I want to use sea foam and then Lucas oil stabilizer since the truck has over 150k miles. Oil changes usually happen once the oil light in the car comes on. Should I still use sea foam, a different product or should I just leave it alone?

  12. Lol. No matter how much synthetic you use you will always eventually develop gunk and deposits. Its an engine. Its bound to happen with usage. That's like saying your oil should never dissipate because their is no leak xD

  13. I had a specific problem I wanted to try the Seafoam with and was wondering if or when the information I needed would be here. I have a 40 year old, rebuilt 74,000 miles ago, never had a problem Chevy 350.

    Right around the 4 and a half minute mark you said if you want it to clean your lifters put it in the tank. I would have guessed wrong and put it in the crank case.

    I either have a dirty lifter, a piston ring going or maybe, and it's a long shot, something as simple as a bad plug or distributer cap. Plugs are too new but I'll check them anyhow but the cap and rotor would have to be 15 years old or so.

    I run a quart of Lucas in it every time I change the oil but for about 7 years it sat in a garage and got started about 5 times a year and the battery tended in the winter but it probably went two miles in that amount of time. Oil didnt get changed in that time and it was probably at least a little dirty when it got parked.

    I got it out on the road for about 3000 miles this summer and it had an oil change before I started the summer.

    I was running 93 with a street legal 3X Octane Booster. The crank was 30 over when it was rebuilt but due to a long story, the guy sleeved the cyl he had already had bored out and used original pistons with new rings. (Had to do with his wife getting pregnant during the rebuild.)

    I got it with 48000 on the motor when I bought it. I gave it the bigger carb it desperately needed and ran it for 5 years, then parked it for 7 and started working on it again in 2013.

    I have a belch of blue smoke coming out of my tailpipe in the morning on first start. Never happened before.

    Do you have any advice before I go forward with the Seafoam?

    BTW it is carburated, Eddlebrock 750.

    I may just need to do a valve job on it but I hope not that or rings.

  14. You're the best to explain everything ,,,new subscriber here and thanks very much for all that good info👍👍

  15. Robert, I need a mechanics advice, I've got a 99 Ford Crown Victoria Police Interceptor with 150,000 miles. It was my first car and means a lot to me, for the past year I've noticed a valve tap on cold start but it goes away when the engine warms up and the car runs great, is this serious? What could be causing this? I really want this car to last, it runs great and when it's warmed up the noise is gone. Is this normal? I don't drive it everyday. Thanks, any advice would be great. I just don't want to cause any more engine damage if this means a serious issue

  16. Thank you for your time. I'm a new subscriber and find your post very informative. I have always wanted to know if this product really works.

  17. How do you know you don’t have any “deposits” or build up inside your engine? I know you said you change it regularly but did you buy that vehicle brand new? Buying a used car is a crapshoot because most people neglect the vehicles maintenance.

  18. A friend of mine gave me a bottle of Sea Foam and I was wondering should I use it on my 2014 Ram 1500, I Bought it brand new so I'm the only owner and I'm pretty sure after 4 years it has developed some deposits. I only have about 49,000 miles on it and I've maintained the oil change regimen religiously. After watching this video i'm wondering should I even use it at all. Do you have any suggestions?

  19. I have a 1997 Ford F-150 pickup and I had to pay $1000.00 to repair blown out engine gaskets caused by Seafoam.
    I don't use Seafoam any more.

  20. I recently put some into my v70 gas tank. My car started to have a rough time starting. And when it did start up it would surge for a second kind of like moot was on the throttle. I'm halfway through that tank and all that has gone away now

  21. “Gunk and sludge” are far beyond “deposits”. Every engine has deposits and build up especially direct injection engines. Just look at before and after results.

  22. You’re conflating sludge and deposits/build up. There’s a ton of snake oil products out there. Sea foam is not one of them.

  23. This video really is a disservice to those unable to understand these things. I don’t mean to be disrespectful either, I just don’t understand why you’d make a video about theories given all the evidence that exists to the contrary

  24. 01:32…This stuff is a fuel additive, Not a oil additive. Put this in your motor oil and i believe you have a ticking time bomb. Just sayin!

  25. I just added seafoam to my tea and took a few sips. No more cough and I hacked up a large green and brown lugee. I can breath alot better now. Yes I recommed Seafoam. Also I had some black smoke come out my Colon. Thank you Seeeafooome.

  26. I am probably going to buy a Tesla for $50,000 on the side of the road instead of my 17 year old 268,000 mile $500 Expedition with a very smooth 5.4 V-36 in it. Thanks for your input…I have a sense that you tell good jokes after drinking a few 40oz's

  27. Running it through the intake via a vacuum port is an excellent idea for Volvo engines with neglected PCV systems, which as you know is common on these cars. It'll break down the oil and carbon deposits that get returned to the intake system from the PCV and allow the combustion process to burn it off.

  28. I have a 2001 Volvo XC70 with 233,500 miles. I'm 18 just got my first car this year. I know a little bit about cars but your videos are very helpful. I changed the oil trap and alternator so far. I do notice carbon deposits when I took off my intake manifold. I'm not sure if I should throw this in before an oil change should I?

  29. I ended up with a '97 850GLT that had been sitting a long time. I kept changing the oil every time it got dirty, which at first was every 6 weeks. I was using conventional oil because of the frequent oil changes. Now, it takes a few months before the oil starts looking dirty and I use full synthetic.

    As Robert pointed out, oil already has detergents in it. Just keep changing the oil when it gets dirty. My concern about these aggressive detergents is it would loosen up big chunks of sludge and get them moving around the engine and clogging things. It might even start attacking gaskets and seals. The gradual approach is best.

  30. In 2018 it is 1 oz per qt which I am doing right now on high mileage 05 focus I just picked up. My question is, is there any "aggressive" transmission treatments*before fluid& filter change) you know of with the rep of seafoam? My goal is to put the 300 I saved by offering less on 4 plugs, engine mts, tranny fluid, oil of course and maybe a coolant flush, to make this car drive like a 5 year old car rather than a 13 year old car. It zips just fine, just want it a little less noisy to get up to speed.

  31. I have a quick for the intake side of this vid i got some residue in my plenum on my v6 engine i wonder would it be safe for this treatment or go with something else never used it i thought you can use this in the intake until i read the bottle now im thinking forget and just use carb cleaner i have J series vtec V6 if that helps

  32. Can this sea foam be used in my Volvo 1994, 850?? Just pour in my gas tank?I was told the red and white can of sea foam, use in your vehicle if you Don’t have a carburetor…

  33. Yes, I did… I had another spell with my 1994 850 Volvo.. The exact same thing.. after all the videos I’ve watch of yours, and I’ve come to a decision, it’s the starter… What am I looking at, money wise??cost of a new starter? Labor? I’m going to also have the drivers door fixed, and the lock fixed too… I love my Volvo, because it belonged to my late mom, and, it also is a great running car….

  34. "I change my oil often" " theres no way it could be a lifter" "theres no sludge" dumb asses wastin peoples time man i swear.😂😭😭

  35. If you let your car sit for like 8 months to a year its a good thing to do. Other than that. The gas you put in your car and the oil you put in it already has cleaners in it.

  36. I'm wondering about the negative comments ..? ..ok so maybe u dont agree with this guy making the video and his views on Seafoam …but you watched his video and gave him a view ..you must have found something interesting about it ..lol smh …if u dont agree with something move along..if u do give him a like and subscribe !

  37. Go to Walmart for 97 cents you can get a bottle of gas treatment or fuel injection supertech pour in then put in gas its the best I swear by it all you need 😀

  38. Great explanation of where it’s useful. Practical. Based on this and because I know the history of my cars, I appreciate the aggressive cleaning comments. I don’t think any of my engines need that.

  39. hi. I'm not a mechanic but I would like to ask. WHERE IS THE DIRT THAT CLEANS THIS PRODUCT ?? WHERE IT GOES IF YOU PUT IT IN THE GASOLINE AND CLEAN THE ENGINE. .INYECTORS. CARBS ..ETC ??

  40. God bless you for your honesty and information. I do have a question/concern though. I bought a car for a fairly cheap price. I did see receipts of oil changes and was content but after I bought the car, I did more digging through a maintenance report and my car was serviced at a valvoline instant oil change station regularly. When I read reviews about the place, people said that sometimes their oil was never changed, Either topped off or never changed. It upset me because almost for 40,000 miles the car was brought to that same place and I am nervous it has sludge for the reasons explained above. I’d like to use the sea foam but how often would you suggest that I do this? I am now using Mobil 1 5w-30 full synthetic oil and a Mobil 1 oil filter.

  41. My advice, if you don't know what your doing, leave this "aggressive" sea Foam alone and add a small bottle of Lucas injector cleaner and engine tune up to your full tank of gas, only, and drive normally and you will accomplish the same thing. If the Lucas doesn't make the car run better go to a mechanic. You need more than a "cleaner". IMO Sea Foam will do more harm than good if you don't know what you are doing. My GT mustang and Hemi Grand Cherokee run great, still have all the horsepower they did when new, and I have over 100K on both cars, all on Lucas oil injector cleaner and engine tune up. I use one small bottle every 4th tank of fuel. I started that when they hit around 80K. $3.95 at Walmart.

  42. My 2004 Volvo V70 sat for a year in a garage in CT. I pulled a fur ball out of the air vent when I changed the filter. I changed the oil and spark plugs. I wanted to change the gas filter but my car seems to have an in tank filter. Currently the car stalls on first crank but always starts on second. I was thinking about using sea foam in my gas tank but I also think my throttle body is dirty. What do you think I should do Robert ?

  43. Welp, you saved me some money, and apparently, a possible catastrophe. I've already had my engine changed once, not really keen on doing that again. My engine shakes at idle, and we've changed the motor mounts (1 was broken, another cracked), put in new spark plugs, needed a new IAC valve and O2 sensor anyway (codes and check engine light came on for O2 sensor), cleaned the throttle body, one mechanic used a smoke machine to try to find any vacuum leaks, found none, I changed my air filter cause that is easy, and the mechanic claims that they did a fuel intake cleaning.

    Still have the shake at idle….gets worse under load, such as use of a/c.

    I thought maybe the mechanic, who is adamantly against Sea Foam, didn't actually clean the fuel intake system, and was going to get a can of Sea Foam and do it myself. But after reading what can happen if all this sludge/build up clogs your oil line, and your video as well claiming the only time you may really benefit from Sea Foam, (which is not my car – I do very regular oil changes), I'm not going to do it.

    I don't know why the heck my car keeps shaking at idle – the only thing that wasn't changed was the MAF, the fuel filter (which I'm still going to get checked), and the timing belt. I was told I would know if the timing belt was misaligned because it would sound like when your engine misfires – not sure about that because the timing belt slipping is how I got a new engine.

    But what I have now realized is that no Sea Foam is going to do anything for that because it's probably nothing at all to do with gunk and build up, despite what people say all over the internet about your car shaking at idle.

    So, long comment, but thank you. I could have really ruined my car for no reason at all.

Leave a Reply

Your email address will not be published. Required fields are marked *