A mineral oil for naturally aspirated or turbocharged diesel marine engines. MARINE 4X has demonstrated in testing its ability to reduce deposit formation and wear. Contains dispersants able to reduce deposits at low temperatures, and enabling good dispersion of insoluble components in the oil. Enables easy starting thanks to its viscosimetric grade, with good cold lubrication, as well as good protection at high temperatures, without increasing oil consumption. Suitable for marine engines such as Cummins and Caterpillar.