The ACEA standard — how to read oil markings?
The ACEA standard (A3/B4, C3 and others) tells you more than viscosity alone. We explain how to read ACEA classes and why they matter when choosing oil.
The ACEA standard — how to read oil markings?
5 min readThe ACEA standard is a European specification that describes the quality and intended use of engine oil. Together with viscosity and manufacturer approvals, it determines the right choice.
What do the ACEA classes mean?
- A/B — oils for petrol and diesel passenger-car engines
- C — Low/Mid SAPS oils, compatible with DPF filters
- E — oils for heavy-duty (truck) engines
- The number (e.g. A3/B4, C3) specifies the level of requirements
ACEA and the diesel particulate filter
Cars with a DPF usually require class C oils (e.g. C2, C3) with a reduced ash content. Pouring in the wrong class can clog the filter over time.
But the ACEA standard isn’t everything — the approvals of specific car manufacturers are often just as important. See why.
During a mobile oil change we’ll make sure the oil meets the right ACEA standard for your car.
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