The most authoritative non-governmental organization specializing in technical supervision of output products – TÜV (German - Technischer Überwachungs-Verein) has confirmed the quality of XADO products again. Technical specialists of TÜV have stated that “Gel-Revitalizant for Gasoline Engines” completely meets the claimed consumer qualities:

• increases compression; 
• increases engine power; 
• reduces fuel consumption; 
• decreases exhaust emissions. 

These results are registered in the TÜV certificate, the validity of which may be proven at the website of the organization.