The reduction in the cetane number causes difficulties in cold starting of diesel engines. The deposits that can occur in the feeding system and in the injectors cause uneven fuel spraying in the combustion chambers, which results in loss of power and an increase in gas emissions. The fluidity properties of diesel fuel vary according to the regions and seasons of the year. The formation of waxes at low temperatures can and does produce failures in diesel engines. Bardahl FOR DIESEL is a concentrated additive, specially designed for Diesel, Turbo-Diesel and TDI engines, which avoids these problems, improving fuel quality and engine performance.