Skip to main content

What is ACEA oil classification?

By 2022-07-13December 1st, 2022Glossary

ACEA Meaning

ACEA oil classification is a system used to classify engine oils for automotive use. The system was developed by the Association des Constructeurs Européens d’Automobiles (ACEA), and is widely used in Europe.

There are three different classifications within the ACEA system: A, B, and C. Class A oils are intended for use in gasoline engines, while class B oils are intended for use in diesel engines. Class C oils are a combination of the two, and can be used in either type of engine.

The ACEA system is not used in North America, where the Society of Automotive Engineers (SAE) has its own classification system. However, many North American oil manufacturers produce oils that meet ACEA specifications, and these oils can be used in European vehicles.

If you’re shopping for motor oil, you may see the ACEA classification listed on the bottle. It’s important to choose the right oil for your engine, so be sure to check your owner’s manual to see what classification is recommended.

ACEA Standard

ACEA is an association of european automobile manufacturers. The first letters of the ACEA standard indicate the class of vehicles for which the oil brand is intended for. The standards are explained below.

A/Boils for gasoline and diesel engines (before 2004 A – auto oils for gasoline engines, B – for diesel engines).

C – a class of oils for gasoline and diesel engines that meet Euro-4 environmental standards. Such oils may be used together with catalysts and particulate filters which reduce the level of pollutants in exhaust gases.

E – oils, designed for powerful diesel engines.

The number after the letter characterizes the oil subclass, and the last two digits after the hyphen indicate the time of adoption of the specification.

What ACEA means?

Frequently Asked Questions (FAQ)

ACEA A3 B3 A3 b4 is a set of viscosity grades for motor oils that meet the standards set out by the European Automobile Manufacturers Association (ACEA). These are often used as reference points when selecting engine oils for cars and light commercial vehicles. The classification system consists of two parameters: one relating to low-temperature cranking performance, and one relating to shear stability at higher temperatures. For example, an ACEA A3 B3 A3 b4 oil must have an SAE grade of at least 5W-30, as well as meeting certain other criteria such as oxidation resistance, cleanliness, and wear protection.

ACEA C3 oils offer improved protection against wear and tear on engine components at higher temperatures. They also protect against sludge formation and oil oxidation due to their added detergents and dispersants. The downside is that this thicker oil may reduce performance somewhat as it is not as efficient in terms of fuel economy compared to thinner ACEA C2 oils.

The ACEA C3 standard requires engine oil to meet higher performance levels than the C4 category. This includes providing better protection against wear, reducing deposits and improving oxidation resistance over a longer period of time. It also provides protection from rust, corrosion or other damage caused by extreme temperatures and conditions. The C4 classification is applicable for diesel engines and has slightly lower requirements for fuel economy and exhaust emissions compared to the C3 grade. However, both categories will help provide improved engine performance in order to meet the demands of modern vehicles. Both standards are recognised by European car manufacturers as meeting their quality requirements. Therefore, selecting either category depends on your specific vehicle’s needs in terms of what type of engine it has and how often you use your vehicle. If you are unsure, it is best to check your manufacturer’s specifications in order to make an informed decision.
David Muench (Carnes Mechanical)

David Muench (Carnes Mechanical)

Hey, I’m David. I’ve worked in a cars store for 6 years. I write reviews and guides, helping people to choose the most suitable technicals and best product for them. I’m happy to finally share my knowledge of the industry here, on CarnesMechanical.

Leave a Reply