Berryman offers several additives under the B-12 Chemtool name. B-12 Chemtool Fuel System Cleaner (part #0116) is 100% strong solvent and does not contain petroleum oils like Seafoam Motor Treatment does. Berryman B-12 Motor Tune-Up (part #0316) contains solvents and petroleum oils like Seafoam but also contains detergents and fuel stabilizers. If you’re looking for a Berryman product to use the way the Seafoam is most commonly used, try #0316. If you want a detergent-based product for your gas tank, try B-12 Chemtool Total Fuel System Clean-Up (part #2616). For combustion chamber cleaning by way of manifold vacuum induction through either the PCV valve or the brake booster, consider Berryman B-12 Chemtool Total Combustion Cleaning Kit (part #2610).