Marine System Oil Additive Package
CAS Number: N/A (formulated 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.
Technical Specifications
| 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 |
Applications
- 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
Key Features
- 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)
Grade Variants & Supplier Reference
Specific grades available from leading Chinese-market suppliers. Spec sheets and lead-time vary per grade — request a quote to confirm availability.
Spec sheet not published — request TDS via inquiry form.
Richful general-purpose system oil pack for two-stroke crosshead engines.
View on supplier site →Big 4 Equivalents Cross-Reference
Approximate functional equivalents from leading global additive houses (Lubrizol, Infineum, Afton Chemical, Chevron Oronite). Chemistry tier, treat rate, and additive synergy may differ — always verify against the supplier TDS before formulation lock-in.
- L-1310 (system oil)
- L-1311 (system oil, high-perf)
- M-555 (system oil)
- HiTEC 4001 (system oil)
- OLOA 31100 (system oil family)
Send Inquiry
CAS Number
N/A (formulated package)
Category
Automotive Lubricant AdditivesAvailability
In StockSample
Dispatched within 5 days