Poster: This information was found online; I’m not sure if it will be useful to you. Marine fuel oil (residue type) and other standards. Names: Marine fuel oil, Heavy diesel, Light diesel. Standards for test methods: Standard grade items – RMD15: 120; RME25: 180; RMG35: 380. Grade 20 (= DMC, DMO); Grade 0. Kinematic viscosity at 100°C: ≤ 15.0, 25.0, 35.0; 20.5 at 50°C; 3.0–8.0 at 20°C. Standards: GB/T265, GB/T11137, ISO31014. Kinematic viscosity at 50°C: ≤ 120, 180, 380. Ring viscosity at 37.8°C: ≤ 800, 950, 2000, 1600, 3800, 3600. Flash point (closed cup), °C: ≥ 60, 60, 60, 65, 65. Standards: GB/T 261, ISO 2719. Pour point, °C: ≤ 30, 30, 30, 23. Freezing point (GB/T510): 0. Standards: GB/T 3535, ISO 3016. Residual carbon, Coulson weight%, ≤ 14, 15, 18; 0.5. 10% residue: 0.40. Standard: GB/T 268, ISO 6615. Ash content, weight%, ≤ 0.10, 0.10, 0.15, 0.06, 0.02. Standard: GB/T 508, ISO 6245. Water content, weight%, ≤ 0.80, 1.0, 1.0, 1.0. Trace amounts only. Standard: GB/T 260, ISO 3733. Mechanical impurities, weight%, ≤ 0.10, 0.10, 0.10, 0.10 (GB/T511); none (GB/T511). Standard: ISO 10307-2. Density, kg/m3: 0.985, 0.991, 0.991; measured actually. Standards: GB/T 1884, ISO 3765, ISO 821(6.2). Sulfur content, weight%, ≤ 3.5, 3.5, 3.5; 0.5 (GB/T387), 1.0 (GB/T387). Standard: GB/T 11140, ISO 8754. Note: Marine fuel oil is made by blending heavy oil with light distillates. It is an excellent fuel with high calorific value, good combustion properties, stable storage characteristics, low corrosiveness, and wide range of applications. It is the most economical and ideal fuel for high-power as well as medium and low-speed marine diesel engines. It can also be used as fuel for boilers with small and medium-sized burners. The main specifications are as follows: 1. Marine fuel oil of type RMD15-120, which corresponds to a Rayburn viscosity of around 1000 seconds at 100°F; it is primarily used in diesel engines for high-horsepower medium and low-speed vessels. 2. Marine fuel oil No. RME25-180 has a viscosity equivalent to Raymond No. 1 at 100°F of around 1500 seconds, and is mainly used in diesel engines for high-power, low-speed ships. 3. Marine fuel oil of type RMC35-380 has a viscosity at 100°F equivalent to about 3000 seconds, and is mainly used in diesel engines for high-power, low-speed ships