They showed that dirt impairs the key engine systems (injectors, valves, turbocharger and particulate filter), which makes these pieces can not reach their peak performance.
Mainly observed that taken to oxygenate, an engine inlet valves (gasoline) or a particle filter (diesel) stuck could congest the engine limiting performance, in addition, nozzle holes are small and do not have to be blocked by full for dirt and adversely affects.
What types of dirt there?
Sure at this point one wonders what kind of dirt question is that we can present in an engine. The type of dirt depends partly on the type of engine but commonly both diesel and petrol engines may have the following types of dirt.
carbonaceous deposits that accumulate on the hot surfaces of the injector and can block their tiny holes. These deposits can also be formed on other components subject to high temperatures as EGR (exhaust gas recirculation exhaust) and accumulate in others, like for instance in turbochargers.
Solid particles of soot caused by partially burned fuel.
solid metal particles produced by wear of engine components. These particles are abrasive and may increase further deterioration.
And there is dirt that can appear exclusively depending on the type of engine, for example in diesel engines impurities resulting from the manufacturing process of the fuel can occur, and in the case of gasoline engines deposits may appear on the intake valve , such deposits are formed when flue gases are mixed with fuel as both the lubricant on the surface of the valve, this engine can also be derived from oil accumulations.
ACTIVE technology to prevent dirt
Realizing the problem, BP laboratories performed different tests to achieve up with a product that would avoid the problems of dirt on vehicles, thus was born the anti dirt ACTIVE technology.
This technology, currently applied to all BP fuels, prevents dirt deposits are created in the engine which significantly improves the car's performance, particularly in tests conducted in the laboratory it was possible that the same vehicle in exactly the same surrender conditions 56Km more deposition in the case of diesel engines and 44 Km in the case of gasoline.
This technology is so effective that with only 2 refueling is achieved clean dirt deposits mentioned obtaining the yield from that time.