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Comprehensive diesel equipment lubrication solutions

Comprehensive lubrication solutions for heavy duty diesel engine for construction machinery and mining equipments
Heavy Vehicles
Highly efficient engine oil for diesel generators and heavy machinery.
Construction machinery
Modern lubricants for diesel engines, providing extended oil change intervals and engine protection.
Mining Equipment
Yuangen Petrochemical Diesel Fuel Lubrication Systems for Industrial Fleet Management
Port equipment
Toyota's global partner, Yuangen: Professional lubricant for diesel engines.
Agricultural machinery
OEM quality diesel lubricants for international distribution and purchasing.
Industrial equipment
Integrated management of diesel engine lubrication systems for large-scale industrial applications.
Sea and inland waterway vessels
Diesel Engine Oil CF-4
CF-4 10W-30 Diesel Engine Oil for Heavy Duty Trucks & Machinery
CF-4 10W-30 diesel engine oil is a high-performance lubricant designed for heavy-duty diesel engines operating in demanding conditions such as construction, mining, and long-haul transportation. Formulated with high-quality base oils and advanced additive technology, this engine oil provides excellent wear protection, deposit control, and oxidation stability, ensuring extended engine life and reduced maintenance costs. It is widely used in commercial vehicles, agricultural machinery, and power generation equipment requiring API CF-4 specification engine oil.
CF-4 10W-40 Diesel Engine Oil – Premium Protection & Long Engine Life
CF-4 10W-40 diesel engine oil is expertly formulated with Mobil deeply refined base oils and high-quality multi-functional additives from globally recognized brands. This premium lubricant delivers comprehensive engine protection, ensuring excellent wear resistance, outstanding dispersant performance, and superior oxidation stability. It prevents piston ring sticking, keeps engines clean and efficient, and effectively controls oil viscosity growth under extreme operating conditions. Ideal for heavy-duty diesel engines, CF-4 10W-40 enhances engine performance, reduces maintenance costs, and prolongs engine lifespan.
High-Performance Diesel Engine Oil CF-4 15W-40 for Heavy-Duty Trucks
CF-4 15W-40 is a premium diesel engine oil formulated with Mobil deeply refined base oils and high-quality multi-functional additives from internationally renowned brands. It delivers comprehensive lubrication protection, outstanding wear resistance, superior dispersant performance to prevent piston ring sticking, and excellent oxidation stability to maintain oil viscosity under high-temperature and heavy-load conditions.
CF‑4 20W‑50 Diesel Engine Oil – Superior Protection for Heavy-Duty Diesel Engines
CF‑4 20W‑50 Diesel Engine Oil is specially formulated with Mobil deeply refined base oils and high-quality multi-functional additives from internationally recognized brands, providing comprehensive lubrication and protection for heavy-duty diesel engines. This oil delivers excellent wear resistance to extend engine life, outstanding dispersant performance to prevent piston ring sticking, and superior oxidation stability to maintain consistent viscosity under high-temperature and high-load conditions.
CF‑4 10W‑40 S10 Diesel Engine Oil – Superior Protection for Heavy‑Duty Engines
CF‑4 10W‑40 S10 Diesel Engine Oil is formulated with Mobil high‑quality mineral base oils and optimized additives from internationally renowned brands, delivering reliable lubrication and protection for heavy‑duty diesel engines. This engine oil offers exceptional wear resistance, strong dispersant and detergent performance to keep the engine clean, and superior oxidation stability to maintain oil viscosity under high‑temperature and heavy‑load working conditions.
Diesel Engine Oil CF-4 15W-40 S10 for Heavy-Duty Trucks & Construction Equipment
CF-4 15W-40 S10 Diesel Engine Oil is formulated with Mobil premium mineral base oils and optimized additives from internationally renowned brands, specifically designed for medium and heavy-duty diesel engines. It delivers superior lubrication and enhanced protection performance, effectively controlling soot deposits, reducing engine wear, and extending engine service life. This product is widely suitable for construction machinery, heavy-duty trucks, and agricultural equipment.
Diesel Engine Oil CH-4
Diesel Engine Oil CI-4
Diesel Engine Oil CI-4 0W-30 for Extreme Cold Start & Heavy-Duty Engines
CI-4 0W-30 Diesel Engine Oil is a full synthetic, low-viscosity heavy-duty engine oil designed for modern diesel engines operating in extreme cold climates and high-load conditions. Formulated with premium synthetic base oils and advanced additive technology, it provides excellent cold start performance, superior wear protection, and extended oil drain intervals.
Diesel Engine Oil CI-4 5W-40 for Heavy-Duty Diesel Engines
Diesel Engine Oil CI-4 5W-40 is a full synthetic heavy-duty diesel engine oil formulated with advanced base oils and premium additive technology. It delivers excellent soot control, wear protection, and oxidation stability for modern diesel engines operating under high load, high temperature, and extended drain intervals.
Diesel Engine Oil CI-4 10W-30 for Heavy-Duty Engines
Diesel Engine Oil CI-4 10W-30 is a high-performance heavy-duty diesel engine oil formulated with premium base oils and advanced additive technology. It provides excellent soot control, wear protection, and oxidation stability, ensuring reliable lubrication for modern diesel engines operating under high load, high temperature, and extended service intervals.
Diesel Engine Oil CI-4 10W-40 for Heavy-Duty Engines
Diesel Engine Oil CI-4 10W-40 is a high-performance heavy-duty diesel engine oil formulated with premium base oils and advanced additive technology. It delivers excellent wear protection, soot control, and oxidation stability, ensuring reliable lubrication for modern diesel engines operating under high load, high temperature, and severe working conditions.
Diesel Engine Oil CI-4 15W-40 for Heavy Duty Engines
Diesel Engine Oil CI-4 15W-40 is a high-performance heavy-duty diesel engine oil formulated with premium base oils and advanced additive technology. It offers superior wear protection, soot control, and oxidation stability, delivering reliable lubrication for modern diesel engines operating under high-load and high-temperature conditions.
Diesel Engine Oil CI-4 15W-50 for Heavy-Duty Engines
Diesel Engine Oil CI-4 15W-50 is a high-performance heavy-duty engine oil designed for trucks, construction machinery, mining equipment, and industrial diesel engines operating under extreme conditions. Formulated with high-quality base oils and advanced additive technology, it delivers excellent wear protection, soot control, and oxidation stability. This engine oil ensures extended drain intervals, improved fuel efficiency, and reliable engine cleanliness. Suitable for engines equipped with EGR systems and compliant with Euro V, IV, and III emission standards.
Diesel Engine Oil CI-4 20W-50 for Heavy-Duty Diesel Engines
Diesel Engine Oil CI-4 20W-50 is a high-performance heavy duty diesel engine oil designed for trucks, construction machinery, mining equipment, and industrial diesel engines operating under extreme conditions. Formulated with high-quality base oils and advanced additive technology, it provides excellent wear protection, soot control, and oxidation stability. This diesel engine oil ensures extended oil drain intervals, improved fuel efficiency, and reliable engine cleanliness. Suitable for engines equipped with EGR systems and meeting API CI-4 specifications, it delivers stable performance in high temperature and heavy-load environments.
Diesel Engine Oil CI-4 5W-40 S10 for Heavy-Duty Diesel Engines
Diesel Engine Oil CI-4 5W-40 S10 is a high-performance synthetic diesel engine oil designed for medium and heavy-duty diesel engines operating in both low-temperature and high-load conditions. Formulated with high-quality base oils and advanced additive technology, it provides excellent cold start performance, strong wear protection, and superior engine cleanliness. This engine oil ensures stable lubrication across a wide temperature range while reducing engine wear and maintenance costs. Suitable for engines requiring API CI-4 performance level, it is especially ideal for modern diesel engines equipped with EGR systems.
Diesel Engine Oil CI-4 10W-30 S10 for Heavy-Duty Diesel Engines & EGR Equipment
CI-4 10W-30 S10 Diesel Engine Oil is formulated with high-quality mineral base oils and advanced additive technology, specially developed for modern medium and heavy-duty diesel engines operating under high temperature and high-load conditions. Designed for trucks, construction machinery, buses, agricultural equipment, and power generation systems, this diesel engine oil provides stable lubrication performance, strong soot control, and reliable wear protection for engines equipped with Exhaust Gas Recirculation (EGR) systems. Its optimized 10W-30 viscosity grade helps improve cold-start performance while maintaining stable oil film strength during continuous heavy-duty operation.
CI-4 10W-40 S10 Diesel Engine Oil for Heavy-Duty Trucks & Construction Equipment
CI-4 10W-40 S10 diesel engine oil is formulated with high-quality mineral base oils and advanced additive technology for medium and heavy-duty diesel engines. It delivers reliable lubrication performance, strong anti-wear protection, and effective sludge control under high-temperature and high-load operating conditions. Designed for trucks, construction machinery, agricultural equipment, buses, and industrial diesel engines, this API CI-4 diesel engine oil helps improve engine cleanliness, reduce component wear, and extend engine service life while lowering maintenance costs. The formulation is especially suitable for diesel engines equipped with EGR systems, helping control soot buildup and maintain stable lubrication performance during continuous heavy-duty operation.
Diesel Engine Oil CI-4 20W-50 S10 for Heavy-Duty Trucks, Mining & Construction Equipment
CI-4 20W-50 S10 Diesel Engine Oil is formulated for heavy-duty diesel engines operating under high load, high temperature, and long working-hour conditions. Using high-quality mineral base oil and advanced additive technology, it helps protect engines used in trucks, construction machinery, mining equipment, agricultural vehicles, and industrial diesel systems. In real working environments such as long-distance transportation, construction sites, mining operations, and hot climate regions, diesel engines often experience increased wear, sludge buildup, oil oxidation, and unstable lubrication. This 20W-50 heavy-duty diesel engine oil helps maintain stable oil film strength, reduce engine wear, and improve engine cleanliness during continuous operation. The formulation is especially suitable for engines equipped with EGR (Exhaust Gas Recirculation) systems, helping reduce soot-related deposits and extending engine service life under demanding operating conditions.
Diesel Engine Oil CK-4
Diesel Engine Oil CK-4 5W-30 for Euro VI Trucks & Heavy-Duty Diesel Engines
CK-4 5W-30 Diesel Engine Oil is a premium low-SAPS heavy-duty engine oil developed for modern diesel engines equipped with advanced emission control systems such as DPF (Diesel Particulate Filter) and SCR systems. Formulated with deeply refined base oils and advanced additive technology, this oil helps reduce engine wear, control soot deposits, and maintain excellent engine cleanliness under severe operating conditions. Its low-viscosity 5W-30 formulation also supports improved fuel economy and cold-start protection. Designed for long-haul transportation, construction machinery, logistics fleets, and agricultural equipment, CK-4 5W-30 delivers reliable lubrication performance for engines operating under high loads, long working hours, and harsh environments.
CK-4 10W-30 Diesel Engine Oil for Heavy-Duty Trucks & Industrial Equipment
Premium Heavy-Duty Diesel Engine Oil Solution YUANGEN CK-4 10W-30 Diesel Engine Oil is formulated with high-quality synthetic base oils and advanced low-SAPS additive technology to provide outstanding engine protection for modern heavy-duty diesel engines operating under severe conditions. This premium lubricant delivers excellent wear protection, soot control, oxidation resistance, and fuel economy performance for commercial vehicles and industrial equipment. Designed to meet the latest API CK-4 specifications, this diesel engine oil is suitable for engines equipped with EGR, DPF, and SCR emission systems. It helps extend engine life, reduce maintenance costs, and improve operational efficiency for fleet operators and industrial users worldwide. The advanced formulation ensures reliable lubrication performance under both high-temperature and low-temperature operating conditions, making it ideal for long-haul transportation, mining operations, construction machinery, agricultural equipment, and power generation systems.
Diesel Engine Oil CK-4 10W-40 – Heavy-Duty Performance for Modern Diesel Engines
CK-4 10W-40 is a premium heavy-duty diesel engine oil formulated with high-quality Mobil base oils and advanced international additive technology. It provides excellent wear protection, engine cleanliness, and emission system compatibility. Its low-SAPS composition ensures safe use with DPF and SCR aftertreatment systems, while meeting the latest emission standards.
Diesel Engine Oil CK-4 15W-40 – Heavy-Duty Protection for Modern Diesel Engines
CK-4 15W-40 is a high-performance heavy-duty diesel engine oil formulated with deeply refined base oils and advanced multifunctional additive technology from internationally recognized suppliers. It delivers outstanding wear protection, oxidation resistance, and engine cleanliness under severe operating conditions. Its low-SAPS formulation effectively protects aftertreatment systems such as DPF and SCR, extends engine life, and improves fuel efficiency while meeting stringent global emission standards.
Diesel Engine Oil CK-4 20W-50 – Heavy-Duty Engine Protection
Diesel Engine Oil CK-4 20W-50 is a premium heavy-duty diesel engine oil formulated with highly refined base oils and advanced additive technology to provide outstanding wear protection, oxidation resistance, and engine cleanliness. Designed for modern diesel engines equipped with DPF and SCR aftertreatment systems, this low-SAPS CK-4 engine oil helps reduce deposits, extend engine life, and support longer oil drain intervals. Suitable for heavy-duty trucks, buses, construction machinery, mining equipment, agricultural machinery, and diesel generator sets, CK-4 20W-50 delivers reliable lubrication performance under high-load and high-temperature operating conditions. It meets API CK-4 and major OEM requirements, making it an ideal choice for fleet operators, distributors, and industrial customers seeking dependable diesel engine protection. YUANGEN CK-4 20W-50 diesel engine oil is available in 18L pails and 200L drums, with OEM and private label solutions available for global distributors and wholesale markets.
Long Life Diesel Engine Oil
Long Life Diesel Engine Oil CI-4/E4 5W-30
Long Life Diesel Engine Oil CI-4/E4 5W-30 is blended with Mobil and Shell fully synthetic base oil ,and advanced internationally renowned brand additives to provide superior lubrication preventing energy losses and to ensure appropriate engine protection in a variety of driving conditions. The totally new formula not only extends the oil change interval, but also reduces engine and piston wear caused by smoke particles, and improves fuel economy. Suitable for Euro IV and Euro V engines without a Diesel Particulate Filter (DPF).
Long Life Diesel Engine Oil CK-4 5W-30 HP
Long Life Diesel Engine Oil CK-4 5W-30 HP uses synthetic and high-performance base oils combined with low-ash additive technology to extend the service life of vehicle DPF, EGR, and SCR devices, ensuring excellent compatibility with catalysts in engine after-treatment systems.
Long Life Diesel Engine Oil CI-4/E4 10W-40
Long Life Diesel Engine Oil CI-4/E4 10W-40 is blended with Mobil and Shell fully synthetic base oil ,and advanced internationally renowned brand additives to provide superior lubrication preventing energy losses and to ensure appropriate engine protection in a variety of driving conditions. The totally new formula not only extends the oil change interval, but also reduces engine and piston wear caused by smoke particles, and improves fuel economy. Suitable for Euro IV and Euro V engines without a Diesel Particulate Filter (DPF).
Long Life Diesel Engine Oil CK-4 10W-40 HP
Long Life Diesel Engine Oil CK-4 10W-40 HP uses synthetic and high-performance base oils combined with low-ash additive technology to extend the service life of vehicle DPF, EGR, and SCR devices, ensuring excellent compatibility with catalysts in engine after-treatment systems.
Long Life Diesel Engine Oil CK-4 15W-40 HP
Long Life Diesel Engine Oil CK-4 15W-400 HP uses synthetic and high-performance base oils combined with low-ash additive technology to extend the service life of vehicle DPF, EGR, and SCR devices, ensuring excellent compatibility with catalysts in engine after-treatment systems.
Synthetic Technology Diesel Engine Oil

Not sure which diesel engine oil you need?

Using incompatible diesel engine lubricants may fail to provide adequate engine protection, leading to accelerated component wear, increased maintenance costs, and unexpected equipment downtime. In severe cases, improper lubrication can even create serious safety risks and lead to equipment failure.
Our technical specialists will help you select the most appropriate diesel engine oil specification based on your engine type, operating conditions, and maintenance requirements.
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