API classification
What API is, how to read the code, and which classes exist.
- API Engine Oil Classification This engine oil classification system was created in 1969 by the American Petroleum Institute . People commonly refer to the API classification as the quality…
- Decoding the API code The alphanumeric code denotes the oil's class. Here, the first letter of the code indicates the type of oil:
- What API classes are there? Technology never stands still, and every year car manufacturers put forward more and more new requirements for engine oils. That's why the oil classes are…