Q
motor oil weights chart
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Motor oil weights, as defined by the Society of Automotive Engineers (SAE), indicate the oil's viscosity, or resistance to flow. The system uses a series of numbers, e.g., 5W-30. The first number followed by a 'W' (for winter) shows the oil's flow at 0°F, indicating cold-weather performance. Lower numbers mean less viscosity and better cold-start performance. The second number after the dash indicates the oil's viscosity at 212°F, representing high-temperature performance. Higher numbers mean thicker oil that can better maintain lubrication at high temperatures. For example, 10W-40 oil is thicker at high temperatures than 10W-30. Choosing the right weight is crucial as it affects engine efficiency, wear protection, and fuel economy. Manufacturers usually provide recommended oil weights in the vehicle's manual, considering engine design and expected operating conditions.
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