Product Introduction
Our CF-4 15W-40 Diesel Engine Oil is a heavy-duty lubricant built for all diesel engines that demand API CF-4 grade oil, ideal for heavy-duty trucks, construction machinery, and large generator sets working in high-temperature, high-load, and dusty conditions.
Blended with premium base oils and high-performance additives, it delivers steady lubrication and all-round protection for engines running non-stop, keeping key parts in good shape and cutting down maintenance hassles for your equipment.

Technical Parameters
|
Parameter |
Specification |
Test Method |
|
Viscosity Grade |
SAE 15W-40 |
SAE J300 |
|
API Classification |
CF-4 |
API 1509 |
|
Kinematic Viscosity (40°C) |
14~16 mm²/s |
GB/T 265 |
|
Flash Point (Open Cup) |
≥ 220°C |
GB/T 3536 |
|
Pour Point |
≤ -25°C |
GB/T 3535 |
|
Total Base Number (TBN) |
10~12 mgKOH/g |
GB/T 4945 |
Product Advantages
• Strong cleaning power: Reduces carbon deposits and sludge, keeping the engine interior clean for smooth operation.
• Excellent anti-wear performance: Forms a protective oil film on key components to lower wear and extend engine service life.
• Stable viscosity: Maintains good fluidity in low temperatures and stable lubrication in high temperatures, adapting to various climate conditions.
• Good corrosion resistance: Neutralizes acidic substances from fuel combustion, protecting engine parts from rust and corrosion.
• Wide applicability: Matches mainstream diesel engine brands and is suitable for heavy-duty, turbocharged direct-injection diesel engines.
Customer Reviews
• "This oil works great for my heavy truck! It runs smoother and the engine noise is much lower. Will repurchase for sure!"
• "We use it for our construction machinery on job sites, and it holds up well in dusty conditions. No engine issues since we switched to it."
• "Great value for money! The oil lasts long, and it really cuts down our equipment maintenance costs. Highly recommend!"
• "Perfect for our generator sets that run 24/7. Stable performance and reliable protection for the engines."
Services
• Provide free product samples for quality testing.
• Support flexible packaging customization to meet different purchase needs.
• Offer fast international shipping with multiple delivery terms (FOB, CFR, CIF) available.
• Professional after-sales team to solve your product use and technical problems in time.








FAQ
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