The ILSAC Specifications (International Standardization and Approval Commitee) uses together with another American Institute and the JAMA (Japan Automobile Manufacturers Association) the API Classifications for an individual ILSAC Standard: T
MIL-Specifications (Military Standard in USA)—A United States defense standard, often called a military standard, “MIL-STD“, “MIL-SPEC“, or (informally) “MilSpecs“, is used to help achieve standardization objectives by the United States Department of Defense.
The International Lubricant Standardization and Approval Committee (ILSAC) was established in 1992 through a collaborative effort between Ford Motor Company, General Motors, Chrysler, and the Japan Automobile Manufacturers Association (JAMA). Its primary purpose is to define minimum performance standards for passenger car engine oils used in gasoline-fueled engines.
ILSAC standards (designated as ILSAC GF-x) are built upon the API Service Categories while incorporating additional performance requirements, such as enhanced fuel efficiency and restrictions on viscosity grades for oils claiming compliance with ILSAC specifications.
ILSAC operates under the API Engine Oil Licensing and Certification System (EOLCS), a voluntary licensing and certification program. This system authorizes lubricant manufacturers whose products meet specific performance criteria to display the API Engine Oil Quality Marks on their packaging. These marks are legally protected and must be printed directly on certified oil containers to help consumers identify suitable engine oils for gasoline-powered vehicles.
Only engine oils that fully comply with the latest ILSAC standards are permitted to bear the API certification mark, ensuring adherence to stringent performance and quality requirements.
| ILSAC Specifications with JAMA | |||||||||
| GF-7 | ILSAC GF-7 offers protection against Low-Speed Pre-Ignition (LSPI), safeguards timing chain wear, provides enhanced high-temperature deposit control for pistons and turbochargers, enforces stricter sludge and varnish management, improves fuel economy, strengthens emission control system protection, and ensures compatibility with engines running on E85 ethanol fuel. | ||||||||
| GF-6 | Provide protection against low-speed pre-ignition (LSPI), timing chain wear protection, improved high temperature deposit protection for pistons and turbochargers, more stringent sludge and varnish control, improved fuel economy, enhanced emission control system protection and protection of engines operating on ethanol-containing fuels up to E85. | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| GF-6A | Current: introduced in May 2020 for oil viscosities a slow as 0W-20. | ||||||||
| GF-6B | Current: introduced in May 2020 for engines requiring 0W-16 oils. | ||||||||
| GF-5 | Current: introduced in October 2010, designed to provide improved high temperature deposit protection for pistons and turbochargers, more stringent sludge control, improved fuel economy, enhanced emission control system compatibility, seal compatibility, and protection of engines operating on ethanol-containing fuels up to E85. (obsolete on May 1, 2021) | ||||||||
| GF-4 | Obsolete: use GF-6A where GF-4 is recommended. | ||||||||
| GF-3 | For 1996 and older engines. | ||||||||
| GF-2 | Obsolete: not suitable for use in most gasoline-powered automotive engines built after 1993. May not provide adequate protection against build-up of engine sludge, oxidation or wear. | ||||||||
| GF-1 | Obsolete: not suitable for use in most gasoline-powered automotive engines built after 1988. May not provide adequate protection against build-up of engine sludge. | ||||||||
| MIL-Specifications (Military Standard in USA) | |||||||||
| MIL-L | Lubcricants | ||||||||
| MIL-G | Greases, Hydraulic fluids | ||||||||
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