Never heard of it.
SeaFoam is the most commonly recommended engine treatment, of which I myself have perceived improvement with only the oil and fuel treatments about 1/2 tank after treatment.
1/3 huffed up the vacuum line, 1/3 in the oil (drive 50 miles and then have it changed in the same day), and 1/3 in an empty gas tank, right before you fill it, is the way to go if you desire an engine treatment. there are DIY guides around for the vacuum line treatment, a quick search will serve you well.
A can is $6 at wally world.