More modern vehicles are designed and engineered to operate on lighter oils. 0W-16 and 0W-20 are multigrade viscosity oil suitable for modern engines.
Multigrade viscosity helps oil flow easily in winter temperatures, but in high temperatures, the oil behaves like a thicker oil.
This feature of multigrade viscosity ensures immediate oil flow at cold temperature and provides reliable lubrication at high temperatures.
The letter ‘W’ in viscosity grade stands for winter, not weight.
In 0W-16 viscosity oil, the viscosity indicates that the oil flows quickly and easily like 0 weight oil in cold temperature, but the oil becomes thick and viscous like SAE 20 weight oil when the engine reaches operating temperature and when the ambient temperature is high.
The higher the number is, the better oil performs in hot temperatures.
Whereas, in 0w-20, the oil also flows easily like 0 weight when it is cold outside. However, the number 20 after ‘W’ describes 0w-20 will become more resistant to thinning in response to high operating temperature of the engine and outside climate.
Difference Between 0w20 & 0w16 Engine Oil
Based on a few things, we will try to understand the difference between 0w-20 and 0w-16
Fuel Economy
As 0w-16 and 0w-20 are lower viscosity oils, both oils are impressively fuel efficient. In the modern era of engine lubricants, the demands and requirements for engine fuel efficiency increase to reduce environmental pollution.
Engines running on thicker oil burn more fuel than thinner oil. The thinner the oil is, the less friction there is on the working surface and the less fuel is consumed.
So, the main difference between 0w-16 and 0w-20 is that 0w-16 is slightly thinner oil than 0w-20 at high outside temperatures and the engine’s operating temperature. Despite 0w-20 being great for fuel economy, 0w-16 is even more fuel efficient than 0w-16.
Suitable Weather to Use 0w20 & 0w16
0W-20 and 0W-16 are multigrade SAE oil mostly suitable for colder climates. These oils flow easily to lubricate critical engine parts immediately and provide excellent cold start performance.
However, 0w-16 is slightly thinner than 0w-20, therefore having better cold start performance than 0w-20. Although both oils are great for winter, 0w-16 has a slight edge in extremely cold temperatures.
On the other hand, 0w-20 provides better lubrication than 0w-16 in hot temperature as It is slightly more viscous than 0w-16.
Sometimes the oil being too thin can cause premature wear in different engine parts. Thicker oil creates a better lubricating film between high-speed metal parts of the engine than a thinner oil. That’s why 0w-20 becomes superior at protecting engines in high temperatures than 0w-16.
Outside Temperature
Since both 0w-20 and 0w-16 are lower viscosity oil, they specially perform effectively well in colder climates. However, as thinner oil is less protective to the engine, these oils are optimized for certain modern vehicles that are designed to get maximum fuel economy as well as protection.
0W-16 oil can flow easily at ambient temperatures as low as -40°C, whereas 0W-20 can also flow normally down to -30°C.
Since both are multi-grade oils, they also have the ability to operate and protect the engine at moderately high temperatures.
However, when it is hot, 0w-20 viscosity oil is more capable of lubricating the engine than 0w-16. 0w-20 can operate well up to 25°C, whereas 0W-16 can operate and lubricate engine parts reliably up to 20°C.
前面： In 0W-16 viscosity oil, the viscosity indicates that the oil flows quickly and easily like 0 weight oil in cold temperature, Whereas, in 0w-20, the oil also flows easily like 0 weight when it is cold outside. 这两句解释了前面的数字 0W 代表什么意义，也说了这两种油在冷天的流动性相同。
后面却是这样说了： 0W-16 oil can flow easily at ambient temperatures as low as -40°C, whereas 0W-20 can also flow normally down to -30°C. 低温下的流动性并不一样，还是有区别的。
More modern vehicles are designed and engineered to operate on lighter oils. 0W-16 and 0W-20 are multigrade viscosity oil suitable for modern engines.
Multigrade viscosity helps oil flow easily in winter temperatures, but in high temperatures, the oil behaves like a thicker oil.
This feature of multigrade viscosity ensures immediate oil flow at cold temperature and provides reliable lubrication at high temperatures.
The letter ‘W’ in viscosity grade stands for winter, not weight.
In 0W-16 viscosity oil, the viscosity indicates that the oil flows quickly and easily like 0 weight oil in cold temperature, but the oil becomes thick and viscous like SAE 20 weight oil when the engine reaches operating temperature and when the ambient temperature is high.
The higher the number is, the better oil performs in hot temperatures.
Whereas, in 0w-20, the oil also flows easily like 0 weight when it is cold outside. However, the number 20 after ‘W’ describes 0w-20 will become more resistant to thinning in response to high operating temperature of the engine and outside climate.
Difference Between 0w20 & 0w16 Engine OilBased on a few things, we will try to understand the difference between 0w-20 and 0w-16
Fuel EconomyAs 0w-16 and 0w-20 are lower viscosity oils, both oils are impressively fuel efficient. In the modern era of engine lubricants, the demands and requirements for engine fuel efficiency increase to reduce environmental pollution.
Engines running on thicker oil burn more fuel than thinner oil. The thinner the oil is, the less friction there is on the working surface and the less fuel is consumed.
So, the main difference between 0w-16 and 0w-20 is that 0w-16 is slightly thinner oil than 0w-20 at high outside temperatures and the engine’s operating temperature. Despite 0w-20 being great for fuel economy, 0w-16 is even more fuel efficient than 0w-16.
Suitable Weather to Use 0w20 & 0w160W-20 and 0W-16 are multigrade SAE oil mostly suitable for colder climates. These oils flow easily to lubricate critical engine parts immediately and provide excellent cold start performance.
However, 0w-16 is slightly thinner than 0w-20, therefore having better cold start performance than 0w-20. Although both oils are great for winter, 0w-16 has a slight edge in extremely cold temperatures.
On the other hand, 0w-20 provides better lubrication than 0w-16 in hot temperature as It is slightly more viscous than 0w-16.
Sometimes the oil being too thin can cause premature wear in different engine parts. Thicker oil creates a better lubricating film between high-speed metal parts of the engine than a thinner oil. That’s why 0w-20 becomes superior at protecting engines in high temperatures than 0w-16.
Outside TemperatureSince both 0w-20 and 0w-16 are lower viscosity oil, they specially perform effectively well in colder climates. However, as thinner oil is less protective to the engine, these oils are optimized for certain modern vehicles that are designed to get maximum fuel economy as well as protection.
0W-16 oil can flow easily at ambient temperatures as low as -40°C, whereas 0W-20 can also flow normally down to -30°C.
Since both are multi-grade oils, they also have the ability to operate and protect the engine at moderately high temperatures.
However, when it is hot, 0w-20 viscosity oil is more capable of lubricating the engine than 0w-16. 0w-20 can operate well up to 25°C, whereas 0W-16 can operate and lubricate engine parts reliably up to 20°C.
是不是保護力弱，要看發动机的設計和製造水平，製造的配合公差越小，机油的黏度指數必須越小，否則在油道末端的机油压力會不足，机油必須配合發动机的設計要求,不信的話，用0w40的机油不是更好，但實際是發动机有過熱燒毀的可能
前面：
In 0W-16 viscosity oil, the viscosity indicates that the oil flows quickly and easily like 0 weight oil in cold temperature,
Whereas, in 0w-20, the oil also flows easily like 0 weight when it is cold outside.
这两句解释了前面的数字 0W 代表什么意义，也说了这两种油在冷天的流动性相同。
后面却是这样说了：
0W-16 oil can flow easily at ambient temperatures as low as -40°C, whereas 0W-20 can also flow normally down to -30°C.
低温下的流动性并不一样，还是有区别的。
此0W非彼0W ？
两者都能在负30和负40流动自如，差别在于天热时粘稠度不同，最后俩数字越大越能在更高温下保持稠度。
0W应该表示在0度C，机油的粘稠度和0 weight的粘稠度一样。W如果只理解成广义表示winter，就会有误解。如果用2种油的粘稠度曲线来表示，就比较容易。0W16曲线一直在0W20下面，但在0度点相切。所以，当曲线延伸到0度以下，2曲线应该是越冷越分开。在最大保护引擎粘稠度下，16就可以延伸到-40度，而20只能延伸到-30度。
如果流動性不足，發动机局部熱量無法有效帶走，温度升高會造成局部机油的碳化（例如活塞環附近），這是油泥和積碳產生的重要原因,所以按照原廠推荐的机油作保養是最佳的選擇。
现在马儿已经放弃Mobile了，这几天在想如何烧尼
某些牌子的5w30油在高温時不過關，所以有時不能光只看標号來判斷
稍不留神，要你好看。烧机油，没商量。