ACEA (European Automobile Manufacturers' Association) is a trade organization established in 1991 to represent the European automotive industry. ACEA is the European equivalent to the API (Amercan Petroleum Institute) in North America. Learn more ACEA divides engine oils into three groups:
1) ACEA A/B for gasoline (A) and light duty diesel (B) engines.
A1/B1 - low viscosity (0W-20, 5W-20) with high temperature/high shear capacity
A3/B3 - extended drain intervals
A3/B4 - high performance direct injection engines
A5/B5 - higher viscosity (0W-30, 5W-30) and performance than A1/B1
A7/B7 - HT/HS viscosity of 2.9 to 3.5 cP and low speed pre-ignition protection for direct injection turbocharged engines
2) ACEA C for gasoline engines with Three-Way Catalysts (TWC) and diesel engines with Diesel Particulate Filters (DPF), divided into low and medium SAPS (Sulfated Ash, Phosphorus, and Sulfur).
C1 - low-SAPS with HT/HS viscosity of 2.9 cP
C2 - mid-SAPS with minimum HT/HS viscosity of 2.9 cP
C3 - mid-SAPS with minimum HT/HS viscosity of 3.5 cP
C4 - low-SAPS similar to C1 with minimum HT/HS viscosity of 3.5 cP and no lower limit on phosphorus
C5 - mid-SAPS similar to C2 and C3 with lower HT/HS viscosity of 2.6-2.9 cP
C6 - mid-SAPS with low speed pre-ignition protection for direct injection turbocharged engines
3) ACEA E for heavy duty diesel engines.
E4 - extended oil drain intervals and meets Euro 3, Euro 4 and Euro 5 emissions
E6 - meets Euro 4, Euro 5 and Euro 6 emissions and can be used with particulate filters and SCR NOx reduction systems
E7 - extended oil drain intervals and meets Euro 3, Euro 4, and Euro 5 emissions when operating under severe conditions
E9 - meets Euro 4, Euro 5 and Euro 6 emissions and can be used with or without diesel particulate filters
E11 - meets Euro 4, Euro 5 and Euro 6 emissions when operating under severe conditions