DaTo CYNN Marine SAE 50 Cylinder Lubricating Oil
DaTo CYN MARINE SAE 50 is a premium high alkalinity marine cylinder lubricating oil specially developed for heavy-duty slow speed crosshead marine diesel engines operating on high sulphur residual fuels. Formulated with quality base stocks and advanced additives, it delivers superior piston cleanliness, anti-corrosion protection, thermal stability, and long-term cylinder wear resistance.
Product Overview
Premium Marine Cylinder Lubricating Oil for Heavy Duty Marine Diesel Engines
DaTo CYNN MARINE SAE 50 is a next-generation marine cylinder lubricating oil engineered for the demanding lubrication requirements of slow speed crosshead marine diesel engines used in cargo ships, marine vessels, tankers, offshore engines, and industrial marine propulsion systems.
Manufactured using high-quality paraffinic base oils and a carefully balanced additive system, DaTo CYN MARINE offers a Total Base Number (TBN) of 70, providing excellent neutralization of acidic combustion by-products produced from high sulphur residual fuel oils containing 3% sulphur or higher.
This advanced marine cylinder oil SAE 50 ensures:
- Maximum piston ring protection
- Superior cylinder liner cleanliness
- Reduced scuffing and wear
- Long drain performance
- High thermal and oxidation stability
- Outstanding corrosion prevention in marine operating environments
It is highly recommended where ship operators demand high-performance marine lubrication with strong acid neutralization capacity under continuous high-load engine operation.
Specification
| Property | Test Method | Typical Value |
|---|---|---|
| Product Name | — | DaTo CYN MARINE |
| SAE Grade | ASTM | SAE 50 |
| API Grade | ASTM | CF |
| Specific Gravity @15°C | ASTM D1298 | 0.9150 |
| Flash Point, °C | ASTM D92 | 260 |
| Pour Point, °C | ASTM D97 | -9 |
| Viscosity @40°C, cSt | ASTM D445 | 260 |
| Viscosity @100°C, cSt | ASTM D445 | 19.50 |
| Total Base Number (TBN) | ASTM D2896 | 70 |
| Viscosity Index | ASTM D2270 | 95 |
Benefits
✔ High TBN 70 Acid Neutralization Formula
Provides strong alkalinity reserve to combat corrosive acids generated during combustion of residual high sulphur fuels.
✔ Excellent Wear Protection
Creates a durable lubricating film between piston rings and cylinder liners to reduce friction and abrasive metal wear.
✔ Superior Thermal Stability
Maintains performance under continuous high-temperature combustion chamber conditions.
✔ Enhanced Piston Cleanliness
Prevents carbon deposits, lacquer, and sludge formation for smoother cylinder operation.
✔ Anti-Corrosion Marine Protection
Protects internal engine parts against rust, sulphuric corrosion, and moisture contamination.
✔ High Viscosity Retention
SAE 50 viscosity grade ensures reliable lubrication thickness during slow-speed heavy-duty operation.
✔ Longer Engine Service Life
Reduces overhaul frequency and lowers total marine engine maintenance cost.
Frequently Asked Questions
Marine SAE 50 cylinder oil is a high-alkalinity lubricant specially developed for slow-speed, crosshead marine diesel engines operating on high-sulphur residual fuels. DaTo CYNN MARINE SAE 50 provides piston-ring protection, cylinder-liner cleanliness, thermal stability and corrosion resistance.
A marine engine lubricant helps protect critical engine components against wear, corrosion and deposits during continuous heavy-duty operation. DaTo CYNN MARINE SAE 50 has a TBN of 70, helping neutralize acidic combustion products generated by high-sulphur fuels.
DaTo CYNN MARINE SAE 50 is designed specifically for ship cylinder lubrication in slow-speed crosshead marine diesel engines. Its durable lubricating film helps reduce friction, scuffing and abrasive wear between piston rings and cylinder liners while maintaining cylinder cleanliness.
Yes. DaTo CYNN MARINE SAE 50 is formulated for heavy-duty marine diesel applications, including cargo ships, tankers, marine vessels, offshore engines and industrial marine propulsion systems. Its SAE 50 viscosity provides reliable lubrication thickness during continuous heavy-load operation.
Yes. This high load marine lubricant provides strong thermal and oxidation stability, wear protection and corrosion resistance. Its high TBN and SAE 50 formulation are designed to support reliable cylinder lubrication and long-term engine protection under demanding marine operating conditions.



