Since no harmful residues are left when using HHO gas in our hydrogen engine cleaners, there is also no residue of hydrogen hydroxide or HHO on the engines. HHO is capable of vaporizing carbon from the molecular components of the engine. This process is completed within an hour. HHO enhances outcomes for mechanics while reducing the environmental impact, aligning with a quality-driven traditional approaches. This type of hydrogen fueled engine cleaner works for both proactive and reactive maintenance as well as a cyclic service check.