Understand oil specifications and manufacturer approvals with a clear reference library for iPhone and iPad.
Browse API, ACEA, ILSAC, JASO, and manufacturer standards, or explore practical articles about oils, lubrication, and automotive fluids. Content updates automatically from oilspecifications.org, with a downloaded library you can read wherever you are.
• Search specification codes, standards, and articles—even offline.
• Jump straight to individual codes with an in-page contents list.
• Save useful references with bookmarks stored on your device.
• Read tables, explanations, and source references without advertising clutter.
• Share references and find content through Spotlight.
• Enjoy a native iPhone and iPad experience with dark mode and adjustable text sizes.
No account is required. Always confirm the required specification and viscosity in the vehicle manufacturer’s current documentation.
