clean diesel means it should have maximum how much sulphur??
ya gud explanation...but according emission control board..it is upto 10ppm
Ultra-low sulfur diesel (ULSD) is diesel fuel with 15 parts per million or lower sulfur content. ULSD combined with advanced emission control technologies is referred to as clean diesel. This type of diesel is now the only diesel fuel used in all on-road diesel vehicles as of 2010. The sulfur content of ULSD has been reduced by 97% compared to diesel fuel used in the past. Biodiesel is also considered a USLD because it contains very low levels of sulfur.