Explore API oil service categories and classifications for gasoline and diesel engines. Ensure proper protection and performance—view current standards today!

API API Engine Oil Service Category Charts Gasoline Engines ... Diesel F Category ... Diesel C Categories ... You can download these charts in PDF format from API's website.

Discover the complete Engine Oil Classification Chart with SAE, API, ACEA, ILSAC, and JASO standards to choose the best oil for your vehicle.

The American Petroleum Institute (API) is the only national trade association that represents all aspects of America’s oil and natural gas industry. Our more than 600 corporate members, from the largest …

Explore the key specifications of API oil standards, their classifications, and how they impact engine performance and longevity in different conditions.

Dec 16, 2025 · We’re going to give you a complete explanation of API oil service categories, breaking down those cryptic letters and symbols into plain English. You’ll learn exactly what they mean for …

Here are some API standards for engine oil: API SP: Introduced in May 2020, this standard protects against low-speed pre-ignition (LSPI), timing chain wear, and high temperature deposits.

Explore the distinctions between API Base Oil Groups I, II, and III—saturates content, sulfur levels, viscosity index, and refining processes—through a detailed comparison table and analysis of …

Discover the ultimate Engine Oil Specification Chart to choose the right oil for your vehicle. Learn about viscosity, API, ACEA, ILSAC ratings, and OEM approvals.

API Engine Oil Classifications For Service Fill Oils Passenger Vehicle Engine Oil Requirements For API SP-RC/ILSAC GF-6A/6B Categories Requirements for API SP are the same as RC version, except …