Saved me from buying a new set of valve lifters
Upon watching lots of videos on Youtube about other guys "Seafoaming" their vehicles, I finally decided to try it on my old and beloved Kia Sephia 95. Before applying this product, I had problems with the valve lifters which were making a pinging sound every time I revved the engine too hard. The car was also weak and not giving me too much mileage. After applying this product, my car runs like a champ! Now I save a lot of gas and I can really notice an increase in both acceleration, torque and definitely it idles very quietly now. I ordered 6 cans because I intend to distribute this product on my country and make a profit out of this wonderful and inexpensive solution.

Lexus IS300 w/ 90K miles
Hello, I was skeptical about this product at first. My idle RPM was kinda low and the car would vibrate at times during the idle, especially when the A/C engaged. I used the seafoam and my idle has been smoothened out, throttle response seems crisp, and the car overall feels a lot better than before.

I highly recommend this product.

Not a miracle in a bottle, but very effective!
My 1998 Mitsubishi Montero Sport has reached 100K miles and I needed to spoil her by buying some kind of engine treatment. My mechanic recommend this product and I'll tell you that the engine runs a lot smoother.

Also, when I apply gas I can feel the engine "struggle" less than before... it almost feels like a new engine. I placed the treatment in the oil crankcase and in the gas tank as well. An added feature is that it comes with a spill free spout but I still recommend a long funnel.

Cons: a bit pricey when compared to it's competitors but we're only talking a few dollars.

Seafoam in the gas tank
I put Seafoam in my tank and filled with gas. Within 25 miles the engine miss at idle was almost completely gone. Try it yourself.

Dont hesitate buy it! This really works
I was hesitant to buy this product since I had never heard of it but another member of the Suburban owners group recommended it and I tried it.

WOW! This stuff works great even without disconnecting the vacuum hose just as a straight in the tank treatment.

The engine a 350 Vortec had developed knock or a ping when I accelerated or went up hill I tried some of the others but no joy :(
However after one can of Seafoam it was all gone and runs like a champ!