In fact, it has been proven that these chemical elements negatively influence the performance of the different post-treatment systems necessary to reduce polluting emissions. In particular, the low ash content helps to reduce the accumulation of particulate matter inside the DPF (Diesel Particulate Filter) of modern diesel engines while the low phosphorus and sulfur content removes the danger of "poisoning" of the catalytic converters (CAT) of the most recent petrol cars. It is particularly suitable for cars with petrol engines (including direct injection) and turbodiesel engines with direct injection system of the "common rail" or "pump-injector" type. The spare part is compatible with the models indicated in the title, table and specifications of the advertisement. Check year, version, e.