SAE J300 is the standard that defines the mono and multigrade oil viscometry properties, maintained by SAE International. The main parameter for engine oil viscometrics is the kinematic viscosity of the oil, high viscosity high shear temperature measured by a cushioned bearing simulator, and low temperature properties as measured by cold crank simulator and mini rotary turning viscometer. This standard is commonly used worldwide, and the standard organizations that do it include API and ILSAC, and ACEA.
Video SAE J300
Viscosity value
The SAE viscosity values ​​include 0W to 25W in 5W and 4 to 16 multiples of 4, and 20 to 60 by multiples of 10. The preceding values ​​indicate the low temperature properties of the dual oil oil (W indicates "winter"), while the latter value indicating the nature of engine oil at the operating temperature of the machine. To illustrate, lawn mowers may require SAE 30 monograde machine oil that must meet SAE 30 requirements. In comparison, contemporary passenger car engines may require SAE 0W-20 multigrade engine oil to meet SAE 0W and SAE 20 requirements.
The addition of SAE 8 through SAE 16 viscosity grade enables an increase in fuel economy through hydrodynamic friction reduction.
Maps SAE J300
See also
- SAE J306 - defines the viscosity of the gear oil
References
Further reading
- Noria Corporation. "How to Read Oil Can". Machine Lubrication . Retrieved 2018-03-18 .
Source of the article : Wikipedia
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