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SAE Introduces (SAE 16) As New Grade For Oil Viscosity

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oilsThe ace body in the world of Automotives, Society of Automotive Engineers has announced on April 2, 2013 in recent post, a brand new grade for lube oils. With this, it has announced not only a new grade for viscosity ranges, but has also set a new platform for new grades of lower oil viscosity in future.

The new grade of viscosity, SAE 16 was long due. It is a lower viscosity specification meant for passenger cars whose engines and other parts of the power-train are made for reducing the hydrodynamic friction, thereby increasing their efficiency. When that happens, the fuel economy and power delivery of the cars will improve and the noise produced by them will decrease.

The new grade has been named SAE 16, which sounds quite vague compared to the existing nomenclature. First, it does not clearly mention that it is an oil grade made for cars which require maximum fuel efficiency (or need to run at lower temperatures).

Second, it appears awkward because the number usually follows a series of multiples of 5. To ensure that the new name acts as the USP of the oil grade, the experts at the SAE International Engine Oil Viscosity Classification (EOVC) center proposed the following reasons: One, the new name will ensure that the oil is used for cars requiring lower viscosity fuels only and having higher fuel efficiency; two, the assigning of number ‘16’ will open the gates for further oil grades to be named by the multiples of ‘4’ as – 12, 8, 4 etc. But it has been clarified that the number 16 in this grade as such holds no significance of temperature specification as the earlier oil grades do. Older vehicles will not be able to use this new grade of oils. These new specifications were published in the revised edition of “SAE J300: Engine Oil Viscosity Classification” on 2nd April, 2013.

It all began when a consortium of passenger car manufacturing companies requested a revision in the J300. They needed a grade of lube oil which was lower than the S20 (the lowest present grade for high temperature vehicles). So SAE J300 (the worldwide classification of engine oils by viscosity grade) underwent a revision after much brainstorming and deliberation.

Now, the convention not only contains new specifications for viscosity, but also includes the revised minimum high-temperature viscosity range for the SAE 20 grade. The new kinematic viscosity at 1000C begins its range at 6.9 centistokes. Now SAE 20 has kinematic viscosity range similar to that of the other high-viscosity grades.

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