Gentlemen, I know Seafoam has a great following, but it is not possible to pour any product into your engine and have it do anything from a single can in 10 minutes. If a substance was actually strong enough to affect any buildup in such a diluted state it couldn't be openly sold to the public. IMO, it's nothing more than snake oil designed to separate you from your money quicker than the carbon buildup from your engine. Another myth from back in the day was to pour water into the intake with the engine running. The idea was that the water was converted to steam and would remove carbon buildup from the piston tops and rings. Never fully promoted as water was hard to sell. Now the water has been replaced by a magic formula. I recommend doing proper maintenance and save your money for mods and gas. Good luck.....