Engine Flushing using Barnacle Buster

We wanted to extend the life of our engine manifolds, so we decided to try Barnacle Buster.  As an addendum to this video, we started the engines up a few days after this cleanout, and the water leaving the engines was still very dirty.  We believe that the Barnacle Buster continued to work even after the initial flushing, and loosened up more debris, so the next time we started up it finished the flushing process!