What API classes are there?

Section API classification, article 3 of 352 words, 1 minute

What API oil classes are there, and how many of them?

In this section: 3 articles
  1. API Engine Oil Classification
  2. Decoding the API code
  3. 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 regularly updated, once every few years. At the time this article was written, the following classes existed:

Engine oils for petrol engines

Engine oils for diesel engines