Sinopec Marine TPEO 4015i s a high-performance Trunk Piston Engine Oil (TPEO), specifically designed for medium-speed diesel engines operating on Heavy Fuel Oil (HFO) or Marine Diesel Oil (MDO) with a sulfur content of up to 1.5%. With an SAE 40 viscosity grade, this product provides a robust lubricating oil film, offering maximum engine protection in high-temperature operating environments while maintaining stable oil pressure.
Robust Oil Film (SAE 40): Provides extreme pressure protection, effectively sealing piston rings and cylinder liners, while reducing oil consumption.
Key Technical Features
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Màng dầu bền bỉ (SAE 40): High-load bearing capacity that ensures effective sealing of piston rings and cylinder liners, reducing oil consumption.
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Superior Detergency & Dispersancy: Effectively prevents carbon deposit formation on pistons and ring grooves, maintaining excellent engine cleanliness.
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Effective Acid Neutralization (TBN 15): Protects critical engine components against corrosive acidic by-products generated from the combustion of sulfurous fuels.
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Excellent Water Separation & Filtration: Facilitates easy separation of seawater and solid contaminants via centrifugal purifiers, maintaining the lubricant’s physical and chemical integrity over extended service intervals.
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Outstanding Oxidation Stability: Resists oil degradation at high operating temperatures, extending oil service life.
Main Applications
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Marine Main Engines & Generators: Suitable for medium-speed engines from major manufacturers such as MAN Energy Solutions, Wärtsilä, MaK, Yanmar, Daihatsu, Hanshin, etc.
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Fuel Compatibility: Suitable for engines operating on residual fuels with low-to-medium sulfur content (up to 1.5% S).
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Other Marine Applications: Suitable for lubricating circulating systems, marine reduction gearboxes, and other shipboard equipment requiring an SAE 40 detergent-type lubricant.
Typical Technical Data
| Đặc tính (Properties) | est Method Typical Result |
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| SAE | – | 40 |
| (TBN) | ASTM D2896 | 15.0 mgKOH/g |
| Kinematic Viscosity@ 100°C | ASTM D445 | 14.5 cSt |
| Viscosity Index(VI) | ASTM D2270 | 98 |
| Điểm chớp cháy (Flash Point) | ASTM D92 | 245°C |
| Điểm đông đặc (Pour Point) | ASTM D97 | -15°C |


