Servo MARINE 303 is a premium marine engine oil developed for use in marine propulsion and diesel generators. It possesses remarkable properties such as protection against wear at adverse operational temperatures, proper dispersancy and enhanced retention of TBN that denotes the alkaline concentration of the oil to facilitate oil longevity. The oil is harnessed in latest, high-rated, medium-speed, pressure-charged diesel engines that are powered by highly viscous residual fuel with more than 2% sulphur concentration. The oil achieves pour point at (-18) deg C and stops acting like a liquid below this temperature, rather acts like a plastic.
| Kinematic Viscosity cSt @ 100°C | 11.3–12.4 |
| Flash point (COC), °C Min. | 220 |
| Viscosity Index, Min. | 90 |
| Pour point °C Max. | (-) 18 |
| TBN,mg KOH/g,Min | 28 |