Marine System Oil Additive Package
Marine system oil additive package formulated for crankcase and circulation lubrication of two-stroke crosshead marine diesel engines. Provides detergency, dispersancy, antiwear and corrosion control across the engine's cooling, bearing and underpiston spaces — environments exposed to fuel oil contamination, water ingress, and high-temperature combustion gas blow-by. Treat rate typically 4-6% in SAE 30 mineral or Group II base oils.
المواصفات الفنية
| appearance | Brown viscous liquid |
| treat rate | 4.0-6.0 wt% in finished SAE 30 system oil |
| flash point (COC) | ≥180 °C |
| recommended base oil | Group I/II solvent neutral, SN 500 or 600 |
| total base number (TBN) | 5-8 mgKOH/g (in finished oil at 4-6% treat) |
| kinematic viscosity (100°C) | 80-150 mm²/s |
مجالات التطبيق
- Two-stroke crosshead marine diesel engine crankcase oils (e.g., MAN B&W, Wärtsilä-Sulzer engines)
- System oil for cylinder oil separator return circuits
- Stern tube and intermediate shaft bearing lubrication
- Compatible with low-sulfur marine gas oil (LSMGO) and very-low-sulfur fuel oil (VLSFO) operation under IMO 2020 sulfur cap
- Long drain interval (>10,000 hours) crankcase service in ocean-going vessels
مميزات المنتج
- Engineered for low-TBN system oil duty distinct from high-TBN cylinder lubricants
- Excellent demulsibility to shed water ingress from cooling system leaks and bunker fuel
- Antiwear protection for crankshaft, crosshead and main bearing surfaces under long drain intervals
- Compatible with all major two-stroke marine engine OEM specifications (MAN B&W, Wärtsilä-Sulzer)
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