API's Lubricants Committee has approved an important change to the API Engine Oil Licensing and Certification System (EOLCS). This change results from the committee's adoption of ILSAC GF-5, the latest performance specification for gasoline engine oils set by the International Lubricant Standardization and Approval Committee (ILSAC). This new specification, when compared to ILSAC GF-4, is intended to provide better engine protection, increase fuel efficiency and increase emissions system protection.
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