I personally found this effective with noticeable improvement but YMMV.
- Smooths rough idle and eliminates hard starts giving cleaner, quieter operation
- Cleans fuel injectors, increases kilometres and saves on high fuel costs at the pump.
- UCL, Upper Cylinder Lubricant, helps prevent cylinder, ring & piston wear along with lubricating valves & guides giving longer engine life.
- The Fuel Conditioner & Treatment protects and lubricates all parts of the fuel system including the fuel pump and injectors allowing more power & performance.
Works if your car was manufactured pre 1854 BC