There is no single "better" oil between 15W and 10W. The best choice depends on your specific needs and the climate you live in.
Understanding Viscosity
The numbers in "15W" and "10W" refer to the oil's viscosity, which measures its thickness or resistance to flow. W stands for Winter, indicating the oil's ability to flow in cold temperatures.
- Lower viscosity (10W): Flows more easily in cold weather, allowing for faster engine startup and better protection during cold starts.
- Higher viscosity (15W): Provides better protection at high temperatures, reducing wear and tear on engine components.
Choosing the Right Oil
- Cold Climates: A lower viscosity oil like 10W is ideal for cold climates, as it flows more easily in freezing temperatures.
- Hot Climates: A higher viscosity oil like 15W is better suited for hot climates, as it can withstand higher temperatures and provide optimal protection.
Multi-Grade Oils
Modern engine oils are typically multi-grade, combining the benefits of both low and high viscosity oils. For example, a 10W-40 oil offers the flowability of a 10W oil in cold weather and the protection of a 40-weight oil in hot weather.
Consult Your Owner's Manual
Always consult your car's owner's manual for the recommended oil viscosity for your specific vehicle. The manual will provide the best oil type and viscosity for your engine's optimal performance and longevity.
