We want A3 B3 ONLY
A1/B1 For use in gasoline and light duty diesel
engines capable of using low friction, low
viscosity, and low HT/HS shear (2.9 to
3.5cP) oils. A fuel economy specification,
this oil may not be able to be used in all
engines.
A3/B3 Stable, stay in grade oil intended for use
in high performance gasoline and diesel
engines or extended drain intervals.
A3/B4 For use in direct injection diesel engines
where special oils may be required, but
also suitable for some applications described
under A3/B3
A5/B5 Similar to A3/B3 but for engines capable
of using low friction, low viscosity and low
HT/HS oils. May be unsuitable for use in
some engines.