D51 Greentech Fuel Saver Diesel Truck 500 Liters (Includes Air Refining Device). The only nanotechnology-based product that is patented internationally and has the CEE, SGS, TUV, IFCO, and RoHS certifications are Greentech Fuel Enhancer.
Greentech Fuel Enhancer has the following benefits:
1. It works with all gasoline and diesel cars.
2. Up to 15% more fuel efficiency for vehicles
3. 70% lessens exhaust emissions.
4. prolongs and improves engine performance.
5. Has a life span of over 10 years.