BP Gasoline and "Invigorate"? - bp gasoline credit card

Increasingly, oil producers will vary with the way gas and cleaner engine. BP - Shell and many others have this announcement. Ok great! Say, if you have a new car and used early BP with invigorate the whole time. Why do we have engine deposits with the use of what is to prevent engine deposit free from the start to clean? Your ads have a lot of loop holes in their claims. Or not?