Seafoam claims to remove carbon deposit build-up from the intake systems and the combustion chambers. Many people believe that Seafoam is really an effective tool and can make your car’s engine run better and longer. It may sound like it works wonders, but it hasn’t been put to the test until now. This YouTuber has done an in depth review on Seafoam, including video of the pistons before and after the its use. Check it out!