Sea Foam Motor Treatment Fuel & Oil Additive, SF16, 16 oz

I bought this under the guidance of my Smog Technician to clear up a high NOx rating for 15mph.I have a 1998 Honda Civic EX VTEC, 5 speed. The past 15 years, the car has always passed smog with flying colors (usually, all the numbers are 0 or close to it). This year, the car passed everything fine with the same record, except NOx at 15 mph. Reading online said that this is the place to fail if your car is going to fail. Prior years, the number was 50, with a max limit of 480 or so. This year, it went up to 780.So, I bought seafoam and, unlike a lot of other people, my car hardly smoked at all. I baby my car usually (short shift, cruise at 60-65, easy on the gas and brake and clutch) all in the name of gas mileage. With only an intake, exhaust, and headers, I average into the mid 40's for gas mileage average, when the EPA for the car is 25/33.I'm not sure if this is something to do with my car getting old and the Catylitic converter is getting bad, but after Seafoam, the car registered a barely pass of 460 out of 480 max.For those of you who wonder, I added the seafoam through the brake booster vacuum line. This, from what I have been told, is good for a quick fix and to pass smog. I later dumped the rest of the can (2/3 left) into the gas tank. Its hard to notice, but I believe the car idles a bit easier (no gushing kind of noises). Could be cleaning the injectors.Whatever the case, I passed smog and plan on using this the next time I go in for a smog 2 years from now.I read a lot of forums online and there is great debate over seafoam. It took me a while to buy it, but it worked. 5 Stars! Worst that happens is you put it into a car that is held together by carbon deposits and your car leaks. If you car leaks oil already, or you believe it has the possibility to with engine cleaning, don't buy this. But if you have high NOx or other figures, this is is a good buy to pass smog. Heck, once you pass smog, it doesn't matter anymore for 2 years. Cheap investment/safety net for your car.

I somewhat recently bought a 1983 Volkswagen Vanagon With the 2,0 litre aircooled engine. I went to clean the ERG valve recently and found that it was clogged all the way with just greasy sooty gunk from the exhaust so im guessing my car has not had much of a cleanout ever and the erg filter is likely rusted out but nonetheless I knew that i could quickly and easily clean it out whereas a new erg filter costs a hundred dollars or more. I bought two bottles of Seafoam Motor treatment because its an add on item and that way i could get the discounted price without adding anything on. For my purposes I found it easiest to pour the seafoam into the hose that attaches to the auxiliary air valve as this was easy to remove and fed right into the junction past the Mass airflow sensor. The brake booster would have been more troublesome despite many people recommending it. I Believe you should just look at all the air hoses leading into the manifold of your car and choose which both won't change the way the engine runs and is easy to pour into which in many cases is the brake booster hose. I warmed up the engine so the auxiliary air valve would not be needed for engine operation, and then I had to cover the majority of the open and exposed end of the hose so the engine would not be choked by too much air, then Its a matter of putting the right amount of Seafoam in so that you don't choke it that way either. At this point you will begin seeing white smoke come out of the exhaust. This is a sign that the seafoam is burning and working properly so continue until you've used nearly a third of the bottle. I actually had trouble killing the engine at the end when you are supposed to pour enough in to kill it so I just shut off the ignition after dumping a lot in at the end. I waited about 10 minutes for it to all soak in and then restarted the engine. I let it run for a little and then began a slow drive around the neighborhood in a low gear to run the engine quickly but not too fast. This created the most smoke by far which is good because that meant it soaked well. Once the smoke stopped or slowed significantly I shut the engine off and checked in the ERG valve hole on the manifold once the engine cooled. I Could not find any more of the greasy black gunk so It worked! The rest was split between going into the fuel and the oil to clean out injectors and galleys and I plan on an oil change soon as a result. Great product does what it says it does and my engine is running much smoother now likely due to a more even mixture in a no longer impacted manifold. I also recommend watching a youtube video on how to do this, it helps to see the things I'm talking about.

I have a tiller, 2 push mowers, garden tractor, edger, 2 generators and a pressure washer that have their own engine. I don't use some of them very often so they can get gummed up from lack of use. I run some SeaFoam in the gas, certainly has helped me numerous times with poor running performance. You'll read reviews where they say it didn't do anything, etc, etc. You need to remember this is going to slowly clean the fuel system, it's not an instant thing. As the engine is running some of this is running through the fuel lone, fuel pump if equipped, carb/injectors and combustion chamber. As it's flowing through it's removing 'gunk' that has built up. For instance my garden tractor was surging pretty bad last spring from setting a bit over the winter. I put some seafoam in the gas tank and mowed the yard (several hours as my yard is big). By the time I finished the engine was running perfectly. Same thing for any engine you put it in. You'll need to run a tank of fuel with seafoam to begin to see any change. If you have a problem other than a fuel restriction this isn't going to fix it. Some people also put this in their oil. I never have and don't plan on it so I can't speak to any performance there. But if you need your fuel system cleaned up, this will do it. Just remember it takes a while for this to work while the engine is running. For really bad conditions I've added more than specified without any problems. Might even run it in a couple tanks to get the fuel flowing as it should be. Just remember it takes a little time to do it's job. Note: I have no affiliation with the company, just a satisfied used of the product.