CK-4 diesel engine oil is a kind of high-performance lubricating oil meticulously developed for modern diesel engines. It meets the stringent requirements of advanced diesel engine technologies and can provide excellent protection and performance under a variety of operating conditions, ensuring the smooth and reliable operation of diesel engines.



It is applicable to many types of diesel engines, including those used in heavy-duty trucks, buses, construction machinery, agricultural machinery and marine diesel engines.

Class specification:
Quality class: API CK-4
Viscosity grade: SAE 15W-40 20W-50
Packing specification: 4L 16L 18L 170kg
Support OEM and ODM customization services.
Warm Tips: Customized production can be carried out based on customers' requirements. If you want to make a purchase, please contact us!
project | product parameters | |
Product Type | 15W-40 | 20W-50 |
Low - temperature dynamic viscosity (mPa.s) | 5877(-20ºC) | 7791(-15ºC) |
Low - temperature pumping viscosity (mPa.s) | 54113(-25ºC) | 59010(-20ºC) |
Kinematic viscosity at 100 °C, mm²/s | 15.56 | 20.6 |
High - temperature high - shear viscosity (150 °C, 10 s¹) | 4.1 | 3.9 |
Pour point, °C | -32 | -31 |
Water content (volume fraction), % | None | None |
Foaming characteristics (foam tendency/foam stability), mL/mL | ||
Procedure I (24 °C) | 10/0 | 10/0 |
Procedure II (93.5 °C) | 20/0 | 20/0 |
Procedure III (after 24 °C) | 10/0 | 10/0 |
Flash point (open), °C | 235 | 245 |
Jining Power Oil Industry Co., Ltd. was founded in 2002. The company is located in Jining, Shandong, which is known as the hometown of Confucius and Mencius in China. Having been deeply engaged in the lubricating oil industry for 23 years, it is a large-scale lubricating oil production base with significant influence and a relatively large size in China.

The company's products cover more than 230 varieties in 13 major categories, including mining lubricating oil, automotive lubricating oil, industrial lubricating oil, construction machinery lubricating oil, antifreeze, base oil, general lubricating grease, special lubricating grease and so on. They are widely applied in numerous fields such as mining, automobiles, machinery, metallurgy, electronics, bearings, and petroleum processing.
The company owns multiple national patents and qualification certifications. It also has a professional R&D team that can continuously carry out technological innovation, optimize product formulas, improve product performance, and ensure that its products always remain at the leading level in the industry.
We will continue to adhere to the business philosophy of "Quality First, Innovation-driven Development", constantly provide customers with high-quality lubricating oil products and services, and make greater contributions to promoting the development of the lubricating oil industry.


Our advantages |


A: We are a professional lubricant manufacturer with 23 years of industry experience. Our factory is located in Jining, Shandong, the hometown of Confucius and Mencius in China.
A: The delivery time is about 10 days after the deposit is paid, and the specific delivery time depends on the products and quantities of the order.
A: According to our sales policy, we require a telegraphic transfer of 30% - 40% in advance, and 60% - 70% of the balance should be paid before shipment. We can provide real - life photos or videos of the goods before the balance is paid.
A: FOB, CFR, CIF or EXW.
A: Usually in 200L metal drums, PE bags, cans, or barrels of different sizes. It depends on your product requirements. We do our best to meet customer requirements.
A: Of course. We will provide free samples, but you need to pay for the shipping cost.
A: We can. We can cooperate in this way to meet the requirements of the order. If necessary, please provide samples, which will help us with testing.
A: The company has an independent laboratory and testing equipment, and has established a strict quality control system. Every link, from raw material procurement to finished product delivery, is strictly tested and monitored. All products meet or exceed national and industry standards.
A: We have a professional sales and service team that can provide you with timely and accurate technical support and solutions. Whether you have problems in product selection, during use, or need to customize lubricant products of special specifications, we will serve you wholeheartedly.