15W40 Engine Oil Product Description
15W40 engine oil is a multi-grade lubricant designed for use in a variety of internal combustion engines, particularly in diesel and gasoline engines. The “15W” indicates the oil’s viscosity at low temperatures, while “40” represents its viscosity at high temperatures. This oil is formulated to provide excellent protection against wear, corrosion, and sludge buildup, ensuring optimal engine performance and longevity. It is particularly suitable for heavy-duty applications, making it a popular choice for trucks, buses, and other commercial vehicles.
Uses of 15W40 Engine Oil
- Heavy-Duty Diesel Engines: Ideal for use in trucks and buses that operate under severe conditions.
- Gasoline Engines: Suitable for older gasoline engines that require a thicker oil for better protection.
- Mixed Fleet Operations: Can be used in both diesel and gasoline engines, making it versatile for mixed fleets.
- High-Temperature Environments: Provides excellent thermal stability, making it suitable for high-temperature operations.
- Extended Oil Change Intervals: Formulated to resist breakdown, allowing for longer intervals between oil changes.
Technical Data
| Property | Specification |
|---|---|
| Viscosity Grade | 15W-40 |
| Density (g/cm³) | 0.87 – 0.89 |
| Viscosity @ 40°C (cSt) | 100 – 110 |
| Viscosity @ 100°C (cSt) | 14 – 16 |
| Flash Point (°C) | 220 – 240 |
| Pour Point (°C) | -18 to -24 |
| Total Base Number (TBN) | 8 – 10 |
| Sulfated Ash (%) | 1.0 – 1.5 |
| API Service Category | CI-4, SL |
| OEM Approvals | Various manufacturers |
Key Features
- Enhanced Wear Protection: Formulated with advanced additives to minimize engine wear.
- Improved Fuel Economy: Helps in reducing friction, leading to better fuel efficiency.
- Oxidation Stability: Resists breakdown and maintains performance over extended periods.
- Detergent Properties: Keeps engine components clean by preventing sludge and deposit formation.
In summary, 15W40 engine oil is a robust and versatile lubricant that meets the demands of both diesel and gasoline engines, making it an essential choice for vehicle owners and fleet operators alike.