Certainly did everything I hoped it would do, wished I'd kept my eye on the elbow piece to help with keeping the hose around the throttle body hose, it snapped while installation and I only got to use about two thirds of the product.It did however do what it is supposed to do, it cleared out so much build up in my recently purchased 16 year old land rover V8. The amount of smoke and foul smelling gasses that flowed out of the exhaust pipe was alarming. I had to find an unused corner of a factory car park to do the job as per instructions. The run on the local bypass caused alarm for many of the other drivers I'm sure, and for a few days afterwards it would smoke even after getting up to temperature. And the smell is quite awful so try not to have your heater blowers on when at a junction waiting in traffic.The immediate effects were a noticeable acceleration performance, the faster start on ignition, the noticeable holding of temperature without any peaks and troughs between idle and high load.I inspected the spark plugs before and after the treatment and the condition of the cylinder chambers were noticeably shinning more than before and by changing the sparks for new, the noticeable misfire it had before has gone.All in all, it has reduced the fumes, increased the performance of the spark and a believe, been part of a thorough service that has increased the efficiency of this old engine.I'm seeing an increase in fuel economy, a smoother ride, a lot less of a visible wobble at idle and after a combination of other essential jobs (oil, filters, MAF, sparks, belt, coolant and new exhaust / O2 sensors) it's feeling like a new car.I'd suggest using SeaFoam on an old engine that has limited or very poor history, but do it away from your neighbours. The results are awfully antisocial.

Should have bought two.

My suzuki swift 2012 has had rough idle and hesitation issue, but the check engine light is NOT on. Sent to three garage shops but all of them told me different stories without any confidence. I ended up buying this, added one bottle through the throttle body, I also added one bottle Seaform Motor Treatment to the fuel tank. SO far the rough idle and hesitation have not reappeared. I can definitely feel the car is more responsive and the acceleration is much smoother. I highly recommend this to try first before paying $$$ to the garage shop.

Does not work

I've used this on several different cars with positive results. Smoothed idle and reduced fuel consumption.

I'm rewriting this review weeks after my first use of SeaFoam. My first review was about the smoke, the car running smoother, etc, etc... The normal stuff. As of now, this product has done so much for both our cars...I see alot of debate online about its' effectiveness. People either love SeaFoam or consider it "snake oil". They also criticize saying the smoke is actually the product burning off, not carbon. To the smoke part, I say what difference does it make?We have two high-mileage cars. A 2009 Jeep LIberty with 143,000 miles and a 2013 Kia Forte with 94,000. The Jeep has had its' Check Engine light on for almost a year - P0430 code, "Cat Inefficiency, Bank 2." The timing chains and guides have been replaced along with the Thermal Intake Sensor (what Jeep calls the MASS Airflow Sensor), MAP Sensor, and EGR valve. The car has been through alot, running very rich for years as we worked out problems and I lived near the ocean for a long time so I began to accept the Catalytic Coverter was history from abuse and salt. I did run CatAClean through (not cheap), cleared the code repeatedly and the Check Engine light just came back on. I tried Techroline (and others), and SeaFoam in the gas tank, same thing. Two shops handed me $2,200 estimates for an entire Catalytic Converter Y-pipe because the second cat was sure to be next. I've also been told all along that the Jeep's motor looks all carboned up on a scope.I ran this product in the intake, did the whole hot soak and smoke thing, cleared the codes, and the Check Engine light has stayed off for weeks! It never stayed off for more than a day before; returning the moment the car got hot. No more P0430 code for the first time in almost a year and I've driving the hell out of it!!! I wasn't even trying this for this problem, I just wanted the idle to smooth out... this was an unintended consequence and is saving us $2,000 because had the light stayed on, I was going to have to replace the cats just to SMOG It. I couldn't even sell it if I wanted to.Now the KIA... we've had problems with the car pinging LOUD on hard acceleration. I hadn't tried much to remedy it but it was getting very bad. I figured I'd deal with it at the 100K tune up.But because of the experience with the Jeep, I ran this in the KIA's intake and let it hot soak for fifteen minutes - really out of curiosity. When we started it back up, there was no smoke - NONE. For miles nothing and it was still pinging! Then all of a sudden on the freeway accelerating, the car kind of paused for a second (which scared me a little) and suddenly started blowing blue smoke out the back - making it difficult to even see the car behind. It gradually recovered and the pinging was completely gone. It idles so quiet now I have to keep checking it is actually running.Just like everyone, I've wasted so much money on miracle cures hoping to luck out. It never happens. Honestly, I've run a lot of regular SeaFoam in the gas tank and it never seemed to do anything. (although I just ran it in the oil and yes it really helped). But this product is really great. Chrysler sells something identical (for $40 a can) and the guys at Valvoline said they have theirs too. It seems safe for the car as long as you keep it away from your MASS Airflow Sensor.I probably won't use it on the Kia again for a very long time but I'm going to incorporate this into my normal 30,000 mile tuneups on the Jeep. I think many of the people who consider this "snake oil" are people who had more serious issues the than product could help with, or never had any problems at all and expected there to be something spectacular. What I've seen are very real, tangible, quantifiable results and a major repair bill narrowly avoided.

Gran producto. El mejor que he probado.

My engine had one cylinder with a piston oil control ring carbonized and not working anymore. While still having decent compression on that cylinder, heavy blue smoke and oily spark plug were bothering me.Applying SEAFOAM through the spark plug hole and carburetor intake solved the problem, heavy blue smoke disappeared and spark plug looks nice like all other cylinders.

Incredibile come cambia una vecchia automobile dopo l'utilizzo di questo prodotto, sia nell'olio motore (prima del tagliando) sia nella benzina. FANTASTICO!!!!

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