SF/CD additive packages for engine oils are a comprehensive set of additives designed for use in modern spark ignition engines. The package contains friction modifiers, detergents, anti-wear additives, dispersants and corrosion inhibitors. These additives work together to help reduce engine wear, prevent deposits and improve fuel economy.
SF/CD additive packages are particularly suitable for high temperature and high pressure engines such as turbocharging, direct injection and multi-valve designs. The general internal combustion engine oil composite additive is made of fine single agent and blended with advanced formula. It is an advanced additive used to blend high-end oils.
The oil compounded with SF/CD engine oil additives has long-lasting performance, can significantly reduce the accumulation of carbon deposits and paint films on the engine piston, and has excellent anti-oxidation, corrosion resistance and anti-wear properties, which can extend the use of the engine. life. Oil change intervals. Can meet API SF/CD level.
Engine oil additive packages are specially formulated blends of compounds designed to enhance engine oil performance and protection. These additives are used in combination with base oils to improve a variety of properties, including lubricity, stability, viscosity, and anti-wear, anti-deposition and anti-oxidation properties.
Some common additives found in engine oil additive packages include:
- Detergents and dispersants: These additives help keep your engine clean by preventing the formation of sludge, varnish and deposits. They work by suspending and dispersing contaminants in the oil so that the oil filter can remove them.
- Anti-wear additives: These additives form a protective film on the metal surface to reduce wear and extend the service life of the engine. They work by reducing friction and providing a barrier that prevents metal-to-metal contact.
- Viscosity modifiers: These additives help control the viscosity of the oil over a wide temperature range. They ensure optimal oil flow and lubrication at both low and high temperatures.
- Antioxidants: These additives prevent oil from oxidizing and forming harmful sludge or deposits. They help extend the life of the oil and maintain its performance over the long term.
- Friction modifiers: These additives are designed to reduce friction between the moving parts of the engine. They help improve fuel efficiency and reduce wear on critical engine components.
- Corrosion Inhibitors: These additives protect engine components from corrosion caused by acids and other harmful combustion by-products. They form a protective barrier on metal surfaces to prevent corrosion.
- Foam inhibitors: These additives help reduce the formation of foam in oils. Foam can negatively affect lubrication efficiency and increase wear on engine components.
- Pour point depressants: These additives help lower the pour point of the oil, making it flow more easily at low temperatures. This is especially important for cold-start businesses.
These additives are carefully selected and blended in specific proportions to create an additive package that is compatible with the base oil and suitable for the specific engine application. The goal is to enhance the overall performance, lubrication and protection provided by the engine oil, ultimately extending the life of the engine.
An SF/CD additive package is a blend of additives designed for use in engine oils that meet the API (American Petroleum Institute) classifications SF and CD. Here’s a breakdown of what these classifications signify and the typical components found in such additive packages:
API Classifications (SF/CD):
- SF: This category applies to gasoline engines introduced before 2000. SF oils provide basic protection against wear and tear under moderate operating conditions typical of older gasoline engines.
- CD: This category signifies diesel engine oils suitable for older high-speed diesel engines built before 1994. CD oils offer protection against factors like soot, wear, and oxidation in these operating conditions.
SF/CD Additive Package Functions:
An SF/CD additive package typically includes many of the following additives commonly found in engine oil additive packages:
- Anti-Wear Additives: These additives, like ZDDP (zinc dialkyldithiophosphate), minimize friction and wear on engine components. This is crucial for protecting these components from degradation throughout the engine’s lifespan.
- Detergents and Dispersants: Detergents keep the engine clean by removing contaminants like sludge, soot, and varnish. Dispersants suspend these contaminants in the oil, preventing them from accumulating and causing sludge build-up that can restrict oil flow and harm engine performance.
- Antioxidants: Engine operation generates heat, and antioxidants help the oil resist thickening and breaking down due to high temperatures. This maintains the oil’s viscosity and ensures proper lubrication throughout the engine.
- Corrosion Inhibitors: These additives form a protective layer on metal surfaces to prevent rust and corrosion, which can harm engine components over time, especially in the presence of moisture or contaminants.
These additives were carefully selected and blended to meet the requirements of gasoline and diesel engines at the time when the SF/CD specifications were relevant. However, it’s important to note that modern engine oils now typically meet more current API specifications, such as SN for gasoline engines and CK-4 for diesel engines, which incorporate advanced additive technology and performance standards.