Bonami sealed the rings!

Being Old school I have used Bonami in many old oil burners in the past. I is critical to use a cleaner like Bonami that doesn't have the scratch substance like pumice. I've dumped it down the carb in running engines right out of the can! So much the exhaust would turn greenish. If your dealing with an old engine that smokes, uses oil or has stuck rings, What do have to lose? If it doesn't work? Your looking at a rebuild or replacement anyway? I've had engines go another couple of years after this.