Cummins ISF2.8 Engine Maintenance Fuel • Please fill low-sulfur diesel oil at regular gas stations: PetroChina, Sinopec, ಇತ್ಯಾದಿ. Fuel Filter • Please use genuine diesel filters from regular channels, and the replacement mileage is 20,000 km. Please refer to the road conditions and usage habits. Engine oil • Please use genuine oil from regular channels, the oil grade is CJ-4 …