API vs. ACEA

What is the difference between API and ACEA? Both provide standard guidelines for motor oil. So what’s the difference between the two, and why does it matter? In short: ACEA’s European standards are more comprehensive, and tailored to specific engine designs and emissions requirements. Let’s take a closer look…

Developed by who?

API was developed by the American Petroleum Institute (API) and the International Lubricant Standardization Committee (ILSAC).

ACEA was developed by the European car manufacturers in collaboration with the European Council for Automotive R&D (EUCAR).

Developed for who?

API was developed for the North American market.

ACEA was developed for the European market.

Differences: Environmental

API focuses on deposit control and wear protection.

ACEA focuses on emissions and fuel economy.

Differences: Fuel Compatibility

API has separate designations for gasoline and diesel.

ACEA must work for both diesel and gasoline (for non-heavy duty.)

Differences: Detergents and Contaminants

API has fewer detergents due to lower diesel engine population.

ACEA has more detergents to handle the contaminants from the (more common) diesel engines.

Differences: Drain Intervals

API drain intervals are usually around half the interval in Europe.

ACEA drain intervals typically at least double the interval in North America, and considers compatibility with diesel particulate filters for passenger cars.

So why are these differences important?

More European vehicles are being imported to North America, and European vehicle manufacturers have strict guidelines concerning oil requirements for each type of engine. Midtex Oil can help you confirm and find the right product for your vehicle, so that you can be confident you and your vehicle are getting exactly what is needed.