The following is the consumer information for the 2002 ACEA engine oil standards:
Gasoline Sequences
A1 Oil intended for use in gasoline engines specifically designed to be capable of using low friction, low viscosity oils with a High Temperature/High Shear rate viscosity of 2.6 to 3.5 mPa.s. These oils may be unsuitable for use in some engines. Consult owner manual or handbook if in doubt.
A2 General purpose oil intended for use in most gasoline engines with normal drain intervals, although it may not be suitable for some high performance engines.
A3 Stable, stay-in-grade oil intended for use in high performance gasoline engines and/or for extended drain intervals where specified by the engine manufacturer, and/or for year-round use of low viscosity oils, and/or for severe operating conditions as defined by the engine manufacturer.
A4 Reserved for future use for gasoline direct
injection engines.
A5 Stable, stay-in-grade oil intended for use at extended drain intervals in high performance gasoline engines designed to be capable of using low friction, low viscosity oils with a HTHS of 2.9 to 3.5 mPa.s. These oils may be unsuitable for use in some engines. Consult owner manual or handbook if in doubt.
Light duty diesel Sequences
B1 Oil intended for use in car and light van diesel engines specifically designed to be capable of using low friction, low viscosity oils with a High Temperature/High Shear rate viscosity of 2.6 to 3.5 mPa.s. These oils may be unsuitable for use in some engines. Consult owner manual or handbook if in doubt.
B2 General purpose oil intended for use in most car and light van diesel engines (primarily indirect injection) with normal drain intervals, although it may not be suitable for some high performance engines.
B3 Stable, stay-in-grade oil intended for use in high performance car and light van diesel engines and/or for extended drain intervals where specified by the engine manufacturer, and/or for year-round use of low viscosity oils, and/or for severe operating conditions as defined by the engine manufacturer.
B4 Stable, stay-in-grade oils intended for use in cars and light vans having direct injection diesel engines but also suitable for applications described under B3
B5 Stable, stay-in-grade oil intended for use at extended drain intervals in car and light van diesel engines designed to be capable of using low friction, low viscosity oils with a HTHS of 2.9 to 3.5 mPa.s. These oils may be unsuitable for use in some engines. Consult owner manual or handbook if in doubt.
Heavy duty diesel Sequences
E2 General purpose oil for naturally aspirated and turbocharged heavy-duty diesel engines, medium to heavy duty cycles and mostly normal oil drain intervals.
E3 This lubricant category provides effective control with respect to piston cleanliness, bore polishing, wear, soot handling and lubricant stability. It is therefore recommended for diesel engines meeting Euro I and Euro II emission requirements running under severe conditions. It is also suitable for extended oil drain intervals according to the manufacturer's recommendations.
E4 Stable, stay-in-grade oil providing further control of piston cleanliness, wear, soot handling and lubricant stability compared to E3. It is recommended for highly rated diesel engines meeting Euro I, Euro II and Euro III emission requirements and running under very severe conditions, e.g. significantly extended oil drain intervals according to the manufacturer's recommendations.
E5 Stable, stay-in-grade oil providing effective control with respect to piston cleanliness and bore polishing. It further provides improved wear and turbocharger deposit control, soot handling and lubricant stability compared to E3. It is recommended for highly rated diesel engines meeting Euro I, Euro II and Euro III emission requirements and running under severe conditions, e.g. extended oil drain intervalsaccording to the manufacturer's recommendations.
Gasoline Sequences
A1 Oil intended for use in gasoline engines specifically designed to be capable of using low friction, low viscosity oils with a High Temperature/High Shear rate viscosity of 2.6 to 3.5 mPa.s. These oils may be unsuitable for use in some engines. Consult owner manual or handbook if in doubt.
A2 General purpose oil intended for use in most gasoline engines with normal drain intervals, although it may not be suitable for some high performance engines.
A3 Stable, stay-in-grade oil intended for use in high performance gasoline engines and/or for extended drain intervals where specified by the engine manufacturer, and/or for year-round use of low viscosity oils, and/or for severe operating conditions as defined by the engine manufacturer.
A4 Reserved for future use for gasoline direct
injection engines.
A5 Stable, stay-in-grade oil intended for use at extended drain intervals in high performance gasoline engines designed to be capable of using low friction, low viscosity oils with a HTHS of 2.9 to 3.5 mPa.s. These oils may be unsuitable for use in some engines. Consult owner manual or handbook if in doubt.
Light duty diesel Sequences
B1 Oil intended for use in car and light van diesel engines specifically designed to be capable of using low friction, low viscosity oils with a High Temperature/High Shear rate viscosity of 2.6 to 3.5 mPa.s. These oils may be unsuitable for use in some engines. Consult owner manual or handbook if in doubt.
B2 General purpose oil intended for use in most car and light van diesel engines (primarily indirect injection) with normal drain intervals, although it may not be suitable for some high performance engines.
B3 Stable, stay-in-grade oil intended for use in high performance car and light van diesel engines and/or for extended drain intervals where specified by the engine manufacturer, and/or for year-round use of low viscosity oils, and/or for severe operating conditions as defined by the engine manufacturer.
B4 Stable, stay-in-grade oils intended for use in cars and light vans having direct injection diesel engines but also suitable for applications described under B3
B5 Stable, stay-in-grade oil intended for use at extended drain intervals in car and light van diesel engines designed to be capable of using low friction, low viscosity oils with a HTHS of 2.9 to 3.5 mPa.s. These oils may be unsuitable for use in some engines. Consult owner manual or handbook if in doubt.
Heavy duty diesel Sequences
E2 General purpose oil for naturally aspirated and turbocharged heavy-duty diesel engines, medium to heavy duty cycles and mostly normal oil drain intervals.
E3 This lubricant category provides effective control with respect to piston cleanliness, bore polishing, wear, soot handling and lubricant stability. It is therefore recommended for diesel engines meeting Euro I and Euro II emission requirements running under severe conditions. It is also suitable for extended oil drain intervals according to the manufacturer's recommendations.
E4 Stable, stay-in-grade oil providing further control of piston cleanliness, wear, soot handling and lubricant stability compared to E3. It is recommended for highly rated diesel engines meeting Euro I, Euro II and Euro III emission requirements and running under very severe conditions, e.g. significantly extended oil drain intervals according to the manufacturer's recommendations.
E5 Stable, stay-in-grade oil providing effective control with respect to piston cleanliness and bore polishing. It further provides improved wear and turbocharger deposit control, soot handling and lubricant stability compared to E3. It is recommended for highly rated diesel engines meeting Euro I, Euro II and Euro III emission requirements and running under severe conditions, e.g. extended oil drain intervalsaccording to the manufacturer's recommendations.
