Diesel Diesel Sulphur content of fuel Composition of the fuel It is important to use low-sulphur fuel It is important for sulphur-free or ultra-low sul- phur fuel to be used on engines with SCR sys- tems certified in accordance with Stage III B/ Tier 4i and Stage IV/Tier 4f to ensure that the engine operates correctly. Use of the wrong fuel grade can cause damage to the engine and the ex- haust gas aftertreatment system. The composition of the fuel is extremely impor- tant for the operation and service life of the en- gine and injection system. The engine output and exhaust gases are also dependent on the fuel grade.
The requirements and testing standards for the most important characteristics are described in the Workshop Manual which can be ordered from Scania dealers or directly from Scania. From January 2011 legislation in the USA and Europe requires all diesel engines not used on the road to be run on sulphur-free or ultra-low sul- phur fuel. The table shows some of the key properties. REQUIREMENT! In Europe, the fuel should be sulphur-free ac- cording to standard EN 590. This means that the sulphur content must not exceed 10 ppm. In the USA the fuel must be an ultra-low sulphur fuel in accordance with standard ASTM D975. This means that the sulphur content must not ex- ceed 15 ppm.
Responsibility IMPORTANT! The machine operator is responsible for using the correct type of fuel to ensure that local laws are complied with. OPM 300 en-GB 71 © Scania CV AB 2015, Sweden Property Requirement Viscosity at 40°C (104°F) 2.0-4.5 cSt Density at 15°C (59°F) 0.82-0.86 cSt Ignitability (CET rating) minimum 49 Flashpoint 56°C (132°F) Particulate contamina- tion level ISO 11500, class 22/20/17