Contains a powerful solvent surfactant to lift fouling off. Concentrated formula makes 10 gallons of solution. Rinse with water, follow with lubrication. Odorless, non-toxic and biodegradable. Non-regulated by OSHA 49 CFR. Mfg: L&R Mfg SPECS: 1 gallon (128 fl. oz./3.8 L) net contents.