Diesel Engine Oil
Your Professional Diesel Engine Oil Supplier
Leanon Petroleum Technology Co., Ltd since 2017, with an investment of 2 00 million yuan to build a modernized lubricating oil factory with an annual output of 150,000 tons, covering an area of 120 mu. It is a comprehensive petrochemical enterprise with production, research and development and sales.
It has a 600-square-meter lubricant research and development and testing center, which can test all indicators of gasoline engine oil, diesel engine oil, gear oil, hydraulic oil and other industrial oils.
Why Choose us
Production Capacity
At present, the company adopts the most advanced blending technology and equipment to optimize the combination to form the most advanced production process, with an annual capacity of 150,000 tons.
Experience and expertise
The technical team has been engaged in lubricant research and evaluation for more than 15 years, and has accumulated a large amount of data on high-end products and racing oils.
Complete Certificates
Obtained ISO9001, ISO14001, ISO45001, IATF 16949 automobile quality management system and CNAS national laboratory certification certificates.
Diesel engine oil fulfills several critical roles that ensure the health and longevity of your engine. First, it provides lubrication, creating a protective layer that helps prevent metal-on-metal contact within the engine, reducing wear and prolonging fuel efficiency and the engine’s lifespan.
Second, diesel engine oil aides in cooling. Internal combustion engines generate a significant amount of heat. The oil absorbs this heat, helping to regulate the engine’s temperature and prevent overheating—a key attribute considering the extreme temperatures of an overheated engine can cause serious damage, including outright failure.
Third, diesel engine oil plays a major role in cleaning your engine. It contains detergents designed to keep your engine clean by neutralizing acids that originate from fuel and from oxidation of the lubricant, and by controlling the level of soot and preventing it from agglomerating. Hence, maintaining cleanliness and reducing the risk of sludge build-up that can interfere with engine performance.
Types of Diesel Engine Oil
CI-4 15W/40 Diesel Engine Oil
CI-4 Diesel Engine Oil is a high performance, multi-grade mineral engine oil specially formulated for mixed diesel engine fleets requiring API CI-4. CI-4 15W/40 diesel engine oil is specially designed for modern diesel engines operating under service conditions and heavy loads.
CF-4 15W/40 Diesel Engine Oil
CF-4 15W/40 diesel engine oil is a high performance, multi grade and mineral engine oil specially formulated for mixed fleets of diesel engines requiring API CF-4.
CF-4 20W/50 Diesel Engine Oil
CF-4 20W/50 diesel engine oil is a high performance, multi-grade mineral engine oil specially formulated for mixed diesel engine fleets requiring API CF-4.
CI-4 Diesel Engine Oil
CI-4 Diesel Engine Oil is a high performance, multi-grade mineral engine oil specially formulated for mixed diesel engine fleets requiring API CI-4. CI-4 20W/50 diesel engine oil is specially designed for modern diesel engines operating under service conditions and heavy loads.

Gather necessary tools and materials. You’ll need new engine oil that matches your manufacturer’s recommendation, a new oil filter, an oil drain pan, an oil filter wrench, a set of wrenches or sockets, and some rags for cleanup.
Warm up the engine. Run your engine for a few minutes to warm up the oil, which makes it easier to drain.
Drain the old oil. Locate the oil drain plug beneath your vehicle and carefully remove it, allowing the old oil to flow into the drain pan. Once fully drained, replace the oil drain plug and tighten it appropriately.
Remove and replace the oil filter. Using an oil filter wrench, remove the old oil filter. Before installing the new filter, apply a bit of fresh oil onto the gasket at the top for a secure seal. Screw the new filter in place.
Add new oil. Locate the oil fill cap on top of the engine. Remove it and pour in the new oil using a funnel.
Check oil level. Start your engine and let it run for a few minutes, then turn it off. Use the dipstick to check the new oil level.
Dispose of old oil and cleanup. Old engine oil should be recycled. Your local auto parts stores often have oil recycling programs.
How to Choose the Right Diesel Engine Oil for Your Vehicle?
Diesel engines vary widely, from small passenger vehicles to heavy-duty trucks. Knowing your engine type will help narrow down the oil options. For instance, high-performance engines may require synthetic oils, while others might be fine with conventional oils.
Viscosity refers to the oil's thickness and its ability to flow at different temperatures. The Society of Automotive Engineers (SAE) rates oils with numbers like 10W-30 or 5W-40. The first number (before the "W") represents the oil’s flow at cold temperatures, and the second number indicates its flow at operating temperatures.
Some synthetic oils are designed for extended drain intervals, meaning you can go longer between oil changes. This can be cost-effective in the long run, especially for vehicles that cover a lot of miles.
If you frequently tow heavy loads or drive in mountainous areas, your engine will work harder and generate more heat. In this case, synthetic oils with high-temperature stability are a better choice.
For urban drivers who often engage in short trips or endure heavy traffic, an oil with good anti-wear properties is essential to protect the engine from frequent start-stop conditions.
Detergents and Dispersants: These additives keep your engine clean by preventing the formation of sludge and deposits.
Anti-Wear Agents: These protect the engine’s internal components from wear and tear, prolonging its lifespan.
Viscosity Modifiers: Ensure the oil maintains the correct viscosity across a range of temperatures, which is crucial for protecting your engine in varying conditions.
Packing
12 X 1 Liters & 6 X 4 Liters & 6 X 5 Liters Carton

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