I picked up a can of this the other day at Shucks. Called Seafoam top engine cleaner. Took my intake elbow off so just the throttle body was exposed. Used a funnel with a piece of hose on it and angled it in the throttle body. Started up the engine and poured some in as i revved the engine. Car starts missing and everything really bad. I look towards the back of the car to see a huge cloud of white and blue smoke. I keep pouring it in and keep pouring untill it stalls out. Took about half the bottle of it. Let it sit for about 5 minutes and started it back up. It barely started but once it did I did the same thing. It ended up stalling out again when I finished it all off. I waited a little longer and started it back up and took off down the road. After about 5 miles it was finally cleaned all out and not smoking. Man the car ran MUCH better. Seems to idle and run better in general. Well worth the 5 bucks the can cost!!! Highly recommended