Engine Oil Viscosity Classification

Standard:
Revised:
  • 2015-01-20
 
  • CURRENT
Publisher:
  • SAE International
Pages:
9
Scope:

This SAE Standard defines the limits for a classification of engine lubricating oils in rheological terms only. Other oil characteristics are not considered or included.

Rationale:

This revision continues the process of extending the SAE Engine Oil Viscosity Classification system to lower high-temperature high-shear-rate (HTHS) viscosities by adding two new high-temperature viscosity grades – SAE 12 and SAE 8 – to SAE J300 with minimum HTHS viscosities of 2.0 and 1.7 mPas respectively. The benefit of establishing new viscosity grades is to provide a framework for formulating lower HTHS engine oils in support of the ongoing quest of Original Equipment Manufacturers (OEMs) to improve fuel economy.

The 100°C kinematic viscosity (KV100) ranges of the new viscosity grades overlap to provide adequate formulating space for these grades. How to assign a single high-temperature viscosity grade to an engine oil with KV100 in the overlap regions is covered in Section 6 of this document.

History:
Standard Published Revision Status
J300_201501 2015-01-20 Latest Revised
2013-04-02 Historical Revised
2009-01-12 Historical Revised
2007-11-06 Historical Revised
2004-05-10 Historical Revised
1999-12-30 Historical Revised
1997-04-01 Historical Revised
1995-12-01 Historical Revised
1994-12-01 Historical Revised
1993-03-01 Historical Revised
1992-02-01 Historical Revised
1991-02-01 Historical Revised
1989-06-01 Historical Revised
1987-06-01 Historical Revised
1986-06-01 Historical Revised
1984-04-01 Historical Revised
1980-09-01 Historical Revised
1977-07-01 Historical Revised
1975-12-01 Historical Revised
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