General Motors (GM) Specifications

General Motors issue their own sets of requirements for service fill engine oils used in their vehicles. These specifications detail the viscosity grades and physical, chemical and engine testing that must be conducted in order to obtain an approval.

There are two separate specifications, dexos1™ for gasoline engines and dexos2™ for diesel engines. In Europe, dexos2™ is also used for service fill gasoline engines. All applications for approvals against GM’s dexos specifications are made through the Center for Quality Assurance (CQA), who administer the approval process on behalf of GM.

ACEA 2016 Compliance Deadline: December 1, 2018

ACEA 2016 Compliance Deadline: December 1, 2018

From December 1, 2018, all engine lubricant formulations making ACEA performance claims must comply with the latest ACEA 2016 European ... Read More
Proposed Changes to the ACEA Light-Duty Oil Sequences

Proposed Changes to the ACEA Light-Duty Oil Sequences

The Light-Duty Sequences consist of detailed sets of specifications for light-duty diesel and gasoline engines, with differentiations for those with ... Read More
How Specification Development Impacts Society

How Specification Development Impacts Society

The certification of lubricant performance has important ramifications—not just for product performance, but for society at large ... Read More
The Real Impact of Engine Oil Performance

The Real Impact of Engine Oil Performance

The current process for certifying engine oil performance has some major implications not just for engine performance, but for the ... Read More
ACEA 2016 Becomes Mandatory

ACEA 2016 Becomes Mandatory

ACEA 2016 became mandatory on December 1, 2017 for all new formulations making performance claims against an ACEA Oil Sequence ... Read More
ACEA Oil Sequences in China

ACEA Oil Sequences in China

Vehicles sold by European OEMs in China are designed to comply with European emissions ... Read More

Why are Low HTHS Viscosity Specifications Being Introduced?

Industry and OEM specifications relating to high temperature high shear viscosity have evolved over the years, learn more here ... Read More

SAE J306 Explained

SAE J306 is a key specification for automotive gear lubricants, defining the limits for a classification of automotive gear lubricants ... Read More

ACEA European Oil Sequences Update

The targeted release date for the next ACEA Oil Sequences has been pushed back to 2020. Here we explain the ... Read More

Why HTHS Viscosity Matters

HTHS viscosity is fast becoming synonymous with increased fuel efficiency. Here we explain why ... Read More

How Lubricants Can Reduce Emissions

Keith Howard, Strategic Technology Manager Ping Zhu, Director of Technology, Asia In previous articles, we touched on how high performance ... Read More

The Last-Mile Delivery Challenge

What is last-mile delivery? And why is it an increasingly important issue in today’s society? We explore the implications here ... Read More

The Automation Implication

How close is the “driverless” vehicle? Automakers are working toward that goal—we explore some of the most important implications ... Read More

Euro 5 and Bharat Stage (BS) VI Emission Standards: Part II

Mark Wilkes, Business Manager, Motorcycles, discusses why Euro 5 and Bharat Stage (BS) VI emission norms will require specialized motorcycle ... Read More
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