Marine Cylinder Oil DCA5040 TBN 40 Low Sulfur Fuel Two Stroke Engine Lubricant

Marine Cylinder Oil DCA5040 TBN 40 Low Sulfur Fuel Two Stroke Engine Lubricant

Kunlun Marine Cylinder Oil DCA5040

This Kunlun marine cylinder oil DCA5040 is designed for the working conditions of diesel engine cylinders. It is blended from selected lubricant distillates through dewaxing and deep refining, using highly alkaline naphthenate as the main agent and adding a proper amount of detergents, dispersants, antioxidant and anti-corrosion additives and other multifunctional additives. With a total base number of 40 mgKOH/g, DCA5040 delivers good detergency and dispersancy, oxidation and corrosion resistance, spreading performance, acid neutralization speed and oxidation stability, reaching the quality level of similar foreign products.

Product Parameters

Product Features

• Excellent spreading performance, quickly forming a lubricating oil film inside the cylinder;
• Excellent thermal and oxidation stability, effectively preventing the formation of high temperature deposits;
• Excellent detergency and dispersancy, effectively slowing down and removing deposits on the cylinder and piston;
• Excellent anti-wear performance, maintaining sufficient oil film strength under high temperature and high pressure, preventing cylinder scuffing and seizing of piston rings and cylinder liners;
• Excellent oxidation and corrosion resistance and acid neutralization speed; the highly alkaline naphthenate technology of DCA5040 effectively neutralizes the strong acids produced by burning high sulfur fuel, reducing corrosion and wear of the cylinder and piston.

Scope of Application

This DCA5040 marine cylinder oil is suitable for the cylinder lubrication of marine low speed two stroke diesel engines using fuel with a sulfur content not higher than 1.5%, and it is especially recommended for marine low speed two stroke diesel engines using low sulfur fuel oil with a sulfur content not higher than 0.5% (such as low sulfur heavy blended oil). To get the best result, please follow the points below.

• Select the oil of the appropriate quality grade and viscosity grade according to the equipment oil regulations;
• The storage container must be dedicated; during storage and transportation it must be waterproof, moisture proof and free of mechanical impurities;
• Keep the oil tank clean during use; the oil change and oil circuit must be clean to prevent foreign matter contamination;
• Prevent other oils from mixing in.

Q&A on DCA5040 High Base Number and Low Sulfur Fuel

Q: Why does DCA5040 use a high base number?
A: The high base number, with a total base number of 40 mgKOH/g, comes from highly alkaline naphthenate. It neutralizes the acidic combustion products formed when burning fuel, protects the cylinder liner and piston from corrosion and wear, and helps keep the engine clean.

Q: Can DCA5040 be used with low sulfur fuel?
A: Yes. It is suitable for engines using fuel with sulfur not higher than 1.5%, and it is especially recommended for low sulfur fuel with sulfur not higher than 0.5%. Choosing the correct base number grade keeps the oil film effective during low sulfur operation.

Q: Is DCA5040 suitable for two stroke marine engines?
A: Yes, it is designed for the cylinder lubrication of low speed two stroke marine diesel engines and offers strong anti-wear, detergency and acid neutralization performance under high temperature and high pressure.

Q: How should DCA5040 be stored and used?
A: Use a dedicated, clean storage container, keep the oil tank and oil circuit clean, keep the oil free of water, moisture and mechanical impurities, and never mix other oils into it. For model selection between DCA5040 and DCA5070, contact us and we will advise the grade that matches your engine and fuel sulfur level.

With consistent quality control, careful selection of base oils and additives, and complete technical support, DCA5040 helps ship operators extend cylinder overhaul intervals and keep engines clean. Contact us for a quotation and application guidance for DCA5040.