CK-4/E11 is a specification for heavy-duty diesel engine oils set by the American Petroleum Institute (API). CK-4 refers to the latest category of diesel engine oil specifications, while E11 refers to the European ACEA (Association des Constructeurs Européens d’Automobiles) oil performance classification.
CK-4/E11 Diesel Engine Oil Additive Complex is a blend of complex anti-wear agents, antioxidants, detergents/dispersants, shear stability improvers and special performance technologies to meet the latest heavy-duty engine requirements and lubricant specifications. It provides excellent wear protection and engine deposit control for diesel engines.
The compound is designed for commercial and passenger vehicle diesel engines and applications required by OEMs. It provides excellent wear, corrosion, oxidation and deposit protection for diesel engines.
Diesel engine oil additive packages help reduce engine downtime, lower operating costs and improve fuel economy. It is proven to meet the highest standards of diesel engine protection, performance and durability.
This product is formulated with Group II and above base oils, appropriate tackifiers, pour point depressants, and other auxiliary additives to meet API CK-4, CJ-4, and ACEA E11 specifications.
CK-4/E11 Diesel Engine Oil Additive Complex is a specialized blend of additives designed to be added to diesel engine oils. This additive package enhances the performance and protection of your engine oil, ensuring optimal engine performance and service life.

CK-4/E11 Diesel Engine Oil Additive Complex contains a variety of ingredients that provide specific benefits to diesel engines. These include detergents and dispersants that help prevent deposits and sludge from forming in the engine. These additives keep your engine clean and free of harmful contaminants that can reduce performance and cause engine damage.
Additionally, the additive contains antioxidants that help prevent engine oil oxidation. Oxidation causes the oil to thicken and form harmful acids, which can lead to engine wear and corrosion. The antioxidants in the CK-4/E11 diesel engine oil additive package help maintain oil stability and prevent these problems.
In addition, the CK-4/E11 Diesel Engine Oil Additive Package contains anti-wear agents to protect your engine from friction and wear. These additives form a protective film on engine surfaces, reducing wear on critical engine components and extending engine life.
The additive package also includes corrosion inhibitors to help protect the engine from rust and corrosion. The purpose of these inhibitors is to minimize the corrosive effects of moisture and other corrosive elements that may be present in the engine environment.
Finally, CK-4/E11 Diesel Engine Oil Additive contains a viscosity modifier to help ensure proper lubrication under a wide range of temperatures and operating conditions. These modifiers improve the oil’s ability to maintain viscosity, providing effective lubrication and protection for the engine.
Overall, CK-4/E11 Diesel Engine Oil Additive Complex is a comprehensive additive blend that provides enhanced performance and protection for diesel engines. It helps keep your engine clean, prevents oxidation and corrosion, reduces wear and ensures proper lubrication.
CK-4/E11 Engine Oils:
- API CK-4: This is a classification for diesel engine oils issued by the American Petroleum Institute (API). It signifies that the oil meets the latest performance standards for modern diesel engines, including those with exhaust gas recirculation (EGR) and diesel particulate filters (DPFs).
- E11: This is an additional specification developed by several European and Japanese engine manufacturers. It requires even higher performance than CK-4, particularly in terms of soot control and oxidation resistance.
Additives in CK-4/E11 Engine Oils:
To meet the demanding requirements of modern diesel engines, CK-4/E11 oils typically contain a variety of additives, including:
- Antioxidants: These prevent the oil from breaking down due to high temperatures and oxidation.
- Detergents and dispersants: These keep the engine clean by removing and suspending dirt and soot particles.
- Antiwear agents: These reduce friction and wear between moving parts.
- Friction modifiers: These further reduce friction and can improve fuel economy.
- Corrosion inhibitors: These protect engine components from rust and corrosion.
- Foam inhibitors: These prevent the oil from foaming, which can reduce lubrication effectiveness.
Specific additive packages:
The exact composition of an additive package will vary depending on the specific brand and formulation of the oil. Different manufacturers may use proprietary blends of additives to achieve desired performance characteristics.
I hope this information is helpful!
CK-4/E11 diesel engine oil additive packages are specifically formulated to enhance the performance of base oils for modern diesel engines meeting the API CK-4 and E11 standards. These standards are designed for various types of diesel engines, including:
- High-speed on-highway applications: This includes long-haul trucks and buses.
- Off-highway applications: This encompasses construction equipment, agricultural machinery, and stationary generators.
- 2017 US EPA on-highway emission standards: E11 oils are specifically designed to meet stricter emission regulations for certain on-highway diesel engines.
Here’s what CK-4/E11 diesel engine oil additive packages typically include:
- Improved Wear Protection: Like other diesel engine oil additives, these packages contain anti-wear additives like ZDDP to minimize friction and wear on engine components, especially under demanding operating conditions.
- Enhanced Detergency and Dispersancy: The detergents keep the engine clean by removing contaminants like soot, sludge, and oxidation products. Dispersants ensure these contaminants stay suspended in the oil, preventing them from forming deposits that can harm the engine. This is crucial for maintaining long engine life in modern engines with stricter emission controls which can generate more soot.
- Oxidation Resistance and Improved Fuel Economy: These additives help the oil resist thickening and breakdown at high temperatures, while also contributing to improved fuel economy. CK-4 oils are formulated for better fuel efficiency compared to previous standards.
- Shear Stability: Certain additives in the package enhance the oil’s shear stability. This means the oil maintains its viscosity under high shearing forces experienced in modern diesel engines, ensuring proper lubrication throughout.
- Aftertreatment System Compatibility: CK-4 oils are formulated to be compatible with modern diesel aftertreatment systems like Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR) systems. These systems can be sensitive to certain oil components, so the additive package needs to be carefully designed to avoid harming them.

