Winter or cold temperatures.
The "W" stands for weight. The "W" stands for winter. 5w30 is a multi viscosity oil. It acts like both 30 weight in warm weather, and 5 weight oil in cold weather.
If you mean W as in 10W30 motor oil, it stands for Winter. The thickness of those oil changes with the temperature- they are not as thick (viscous) in cold weather, but get thicker as they warm up. Makes it easier to start the engine in cold weather.
Winter
Should probably use 10 w 30 or 30 w.
W-30 typically refers to the "30-weight" viscosity rating of motor oil, with "W" indicating its winter performance grade. This type of oil is commonly used in car engines, especially in warmer climates or in high-performance vehicles that require a thicker oil to provide better protection and lubrication.
The W in 10W-30 (example) stands for Winter.
5 w 30
5 w 30
Yes, you can use 10 W 30 motor oil in a 2003 Mazda Protege. If you live in areas where the temps are very cold, 5 W 30 is recommended.
10W-30 motor oil is recommended for the 2005 BMW X5 automobile. When the automobile is being used in extremely hot climates 10 W 40 motor oil is recommended.
5 w 30
5 w 20