15W-40 engine oil

15W-40 engine oil Specification

Packaging Type
bottle

Color
golden

Smell
non smell

Application
automobile

Weight
1 Liter (Ltr)

Pack Type
bottle

15W-40 engine oil Trade Information

Minimum Order Quantity
100 Pieces

Supply Ability
5000 Pieces Per Month

Delivery Time
3 Days

Sample Available
Yes

Certifications
AN ISO 9001 : 2015 CERT. CO.

About 15W-40 engine oil

What does 15W-40 mean? 15W-40 viscosity grade meansit flows like a 15 weight oil from start up in Winter, but provides the protection of a 40 weight once the engine reaches full operating temperature.15W40 oil is a versatile, multi-grade engine lubricant designed to perform reliably across a wide range of temperatures and operating conditions. The viscosity rating 15W40 signifies that the oil flows well even in moderately cold climates (15W), ensuring smooth engine starts and effective lubrication during warm-up. At high operating temperatures, the 40-grade viscosity maintains a strong lubricating film, protecting engine components from wear, heat, and friction.

This grade is commonly used in diesel engines, commercial vehicles, tractors, trucks, and high-performance engines that operate under heavy loads. Its balanced formulation helps resist oxidation, minimize sludge and deposit buildup, and maintain engine cleanliness over extended service intervals. Many 15W40 oils also include advanced additives such as anti-wear agents, detergents, dispersants, and corrosion inhibitors to ensure long-lasting engine health.

15W40 oil is particularly valued for its shear stability, thermal resistance, and ability to deliver reliable protection in both city and highway driving. It supports smoother performance, reduced noise, and improved fuel efficiency, making it a dependable choice for engines requiring strong protection in varied weather conditions and demanding workloads.