今天换机油， 换油的人给我换了5w30的机油，想问下是不是很废油啊？
- 主题发起人 bdsr
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用５Ｗ３０还是１０Ｗ３０？
It is best to follow the recommendation of the manufacturer. The engine is a high precision mechanism designed to operate within very strict parameters. Manufacturer knows them best. Optimally, you should use 5W30 weight oil. However, if you notice that you car is burning a little oil on start up, especially during warm weather, switch to 10W30 for
the warm weather and then go back to 5W30 for cold months. What 10W30 will do is offer a little bit more viscosity on cold starts to prevent seeping past the valve guides into the combustion chambers.
It is best to follow the recommendation of the manufacturer. The engine is a high precision mechanism designed to operate within very strict parameters. Manufacturer knows them best. Optimally, you should use 5W30 weight oil. However, if you notice that you car is burning a little oil on start up, especially during warm weather, switch to 10W30 for
the warm weather and then go back to 5W30 for cold months. What 10W30 will do is offer a little bit more viscosity on cold starts to prevent seeping past the valve guides into the combustion chambers.
- 注册
- 2003-04-13
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- 238,971
- 荣誉分数
- 37,372
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更多的说法：
What is the difference between 5W30 engine oil and 10W30 engine oil?
The only significant difference is that 5W30 offers an additional 5ºC of cold temperature protection, -30ºC vs. -25ºC of the 10W30. Otherwise, 5W30 and 10W30 engine oils have approximately the same characteristics, including viscosities.
What is the difference between 5W30 engine oil and 10W30 engine oil?
The only significant difference is that 5W30 offers an additional 5ºC of cold temperature protection, -30ºC vs. -25ºC of the 10W30. Otherwise, 5W30 and 10W30 engine oils have approximately the same characteristics, including viscosities.
谢谢CCC
转贴
== 5W30
== 10W30
== 5W50
5W30完全可以代替10W30。W前面表示低温润滑效果，前面的数字越小，说明在极低的温度下润滑油仍然不粘稠。W后面的数字表示高温性能，数字越大表示极高的温度仍然不稀薄。 by wcx (玩长线) at 2005.7.10 01:43
不好的润滑油，在正常温度下没问题。但是在冬天启动时，油质粘稠，不但摩擦增大启动困难，而且不能正常润滑；在夏天引擎连续运行时，高温是又会变得特别稀薄，使得机械表面附着的油膜变薄，因而不能起到很好的润滑效果。
5W30和10W30比较，高温参数相同，低温更好，现在是夏天，不用考虑低温参数，因此可以代替。
因此，如有愿意多花钱，最好使用5W50，它能在宽广的温度范围工作。或者在夏天时用10W30，冬天使用5W30。5W50的油，COSTCO有卖。
转贴
== 5W30
== 10W30
== 5W50
5W30完全可以代替10W30。W前面表示低温润滑效果，前面的数字越小，说明在极低的温度下润滑油仍然不粘稠。W后面的数字表示高温性能，数字越大表示极高的温度仍然不稀薄。 by wcx (玩长线) at 2005.7.10 01:43
不好的润滑油，在正常温度下没问题。但是在冬天启动时，油质粘稠，不但摩擦增大启动困难，而且不能正常润滑；在夏天引擎连续运行时，高温是又会变得特别稀薄，使得机械表面附着的油膜变薄，因而不能起到很好的润滑效果。
5W30和10W30比较，高温参数相同，低温更好，现在是夏天，不用考虑低温参数，因此可以代替。
因此，如有愿意多花钱，最好使用5W50，它能在宽广的温度范围工作。或者在夏天时用10W30，冬天使用5W30。5W50的油，COSTCO有卖。
