It dissolves built up carbon deposits and allows them to pass out through the exhaust. I run seafoam through my rig every year or so. Good stuff.
It's a little hard to tell from the pic which line that is...if its the one that your PCV valve is attached to, then it's the right one (I have an 00, it's set up a little different). If there was enough vacuum to pull the seafoam into the engine, then you probably did it right. How many miles are on your truck?
It's a little hard to tell from the pic which line that is...if its the one that your PCV valve is attached to, then it's the right one (I have an 00, it's set up a little different). If there was enough vacuum to pull the seafoam into the engine, then you probably did it right. How many miles are on your truck?