Carbon deposits happen in all engines. Gradually, they build up on fuel injectors, intake valves and vital sensors and are the reason engines become less efficient as time goes by.

But when tin-antimony alloy, is placed in the fuel tank of any petrol or diesel vehicle, it causes the fuel to self-clean as it combusts. And because tin-antimony doesn’t dissolve, breakdown or wear away in fuel, it never needs to be replaced or topped up. And goes on working for as long as it's in the fuel tank. Keeping the engine permanently clean.

Ever unpopular with the motor industry, this simple alloy remains a Godsend for motorists, public health and the environment.