This site does not support Internet Explorer. Please use a modern compatible browser for a better experience
All website features may not be available based upon your cookie consent elections. Click here to update settings.
Singapore refinery for base stocks.

A history of Group II base oils

A quarter of a century ago, Group I base oils were the base stocks of choice for most lubricants. Today, thanks to new refining technology, Group II base oils make up 40% of the world’s base oil production capacity. Learn about the role ExxonMobil played in the development of Group II base oils in Lubes’n’Greases magazine’s 25th anniversary issue.

Download the article
Source: Article by Steve Haffner. Originally published in the 25th anniversary issue of Lubes’n’Greases magazine, 2020.
  • Multiple beakers with orange liquid inside

    Group I

    Through industry-leading base stock technologies and innovations, our quality Group I products — including Americas CORE™ and AP/E CORE™ — are designed to help you consistently meet base oil formulation requirements.

    Learn more
  • exxonmobil industrial gears and molecules with copy

    Group II/II+ EHC™

    Our high-quality EHC base stocks — delivered reliably and with consistent product quality — offer targeted performance capabilities to meet a broad range of base oil and lubricant blending needs.

    Learn more
An ExxonMobil engineer points at refinery while on a phone call.

Stay in the know

Get quarterly insights into the industry and exclusive updates on our global refinery projects with our Taking Stock newsletter.

Subscribe Today