I was advised to put half can in half tank, but I poured full in full tank before filling and believe me it has done wonders to the car. Acceleration is much, much better and engine noise is way less than before. On the inclines where I used to turn off ac to get some power, it goes over smoothly with AC. It not only cleans the catcon but also the entire fuel system, injectors etc.
Can be purchased from any stockist of Profi-Car products and lubricants or at Burraq Autos, Rwp