Nice to know facts we see at the back of Diesel Engine Oil packaging. :D

CONSUMER LANGUAGE:

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 HT/HS 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 HT/HS 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 1 and Euro 2 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 1, Euro 2 and Euro 3 emission
requirements and running under very severe conditions, e.g. significantly extended oil drain intervals according to the
manufacturers 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 1, Euro 2 and Euro 3 emission requirements and running
under severe conditions, e.g. extended oil drain intervals according to the manufacturers recommendations.

:D