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The labels on oil bottles, such as , are standardized codes from the Society of Automotive Engineers (SAE) that describe how the oil flows.

The "W" stands for Winter . A lower number (like 0W or 5W) means the oil is thinner in cold weather, allowing it to reach critical engine parts faster during a cold start, which is when most engine wear occurs. buy car engine oil

This represents the oil's viscosity at the engine's operating temperature (usually 100°C). A higher number indicates thicker oil that provides a stronger protective film under extreme heat but may slightly reduce fuel efficiency. 2. Choosing the Right Oil Type The labels on oil bottles, such as ,