“ These are not 'snake oil' products. They serve an important role in helping to keep your car running well.
Because of the cr*p fuel in Aus, the fuel additive is used to help keep the injectors etc clean and the upper engine cleaner is sprayed into the intake manifold to help clean the throttle body, valves and all things upper engine.
Well worth the few dollars they cost, as without them your Foz will loose more than a little of the sparkle”