Which Oil Grade Is Best for Your Car - 5W30 vs 10W40 ?🤔

Описание: Choosing the right engine oil grade is critical for your car’s performance and engine life.

Engine oils come in different grades, and each grade is designed to perform under specific temperature and driving conditions. The “grade” is usually represented by numbers and the letter W (like 5W30, 10W40, 15W50). The first number (before the W) indicates how the oil flows in cold conditions – the lower the number, the better the oil will perform during cold starts. The second number (after the W) represents the oil’s thickness at higher temperatures – the higher the number, the thicker the oil remains when the engine is hot.
But what do they mean?

For example, 5W30 engine oil is thinner in cold temperatures and provides good fuel efficiency while still protecting the engine when it heats up, making it ideal for modern cars and city driving. On the other hand, 10W40 oil is slightly thicker, giving extra protection for older engines or vehicles that run at higher loads. Similarly, 15W50 oil is designed for high-performance engines, sports cars, or bikes that operate under extreme heat conditions.

Here’s the breakdown:
• The first number (like 5W) shows how the oil flows in cold temperatures. Lower = thinner oil for easier cold starts.
• The second number (like 30 or 40) shows oil thickness at engine running temperature. Higher = thicker protection at high heat.

For example:
• 0W20 / 5W20 → Best for modern engines & fuel efficiency.
• 5W30 → Common, balances cold start and heat protection.
• 10W40 → Thicker, good for older engines or hot climates.

Using the right grade ensures better lubrication, less wear, and longer engine life.