Sea Foam Spray Engine Intake Valve Cleaner, SS14, 14 oz

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.

When I first opened the air intake, it was dirty and grimy, so I cleaned it off with paper towels. Even with that, after spraying the seafoam, the intake looked like it was new. Not only was it smooth, but it also had a rich color and was nicely lubricated. It's an absolute must have.My only complaint is that you're going to need a second person. Holding down the spray button is really tiring and after 8-12 minutes of holding it you get tired of it. Sure, you can just tape it down, but you want to keep the can away from heat sources, so someone should really be holding it.The second problem is the RPM. The manufacturer states to keep the engine at 2'000 RPM while spraying, and in my car at least, the position of the throttle control and the air intake would have put me right over the spinning fan blades.So, you want someone in the cabin holding down the throttle and you might want to switch hands and be ready to hold it in place for a while.But gosh darn are the results worth it.

I own a 2011 Suabru Outback with 198,000 miles on it. I've been a user of Seafoam additives for a while and it's always seemed to keep the fuel system clean. I've owned this car since it had 60,000 miles on it and I average 20-30,000 miles of...tough driving a year. For the past year or two I've had a slight idle drop on occasion like it wants to stall out. Addititionally acceleration is sluggish; almost like I'm flooding the engine. It's never been terrible but not ideal. I've never had the intake/throttle body cleaned until I tried this. Following the directions I sprayed the can in (which takes longer than you'd think). About halfway through my neighborhood ended up like Silent Hill with how much white smoke came out. It continued until the can was empty. After the 10 minute hot soak I took her out to the highway. Immediately had more power, blew out white smoke for about 5 minutes, and when stopped at red lights; I no longer experienced the RPM drop.Now a week later (and using my AC a LOT) I continue to see better performance and smoother operation. Definitely buy this. Just do it.