Chevrolet 2015 Cruze Owner's Manual page 248

Pump labeling Retail pumps
dispensing blends containing up
to 5% biodiesel (B5) are not
required to be labeled with the
concentration of biodiesel.
Blends up to B5 must meet
ASTM D975 (Grades number
2-D or number 1-D S15
commonly known as Ultra Low
Sulfur Diesel).
Caution
Do not use blends containing
more than 20% biodiesel. Any
engine, fuel system, or exhaust
after-treatment system damage
would not be covered by the
vehicle warranty.
Pumps dispensing more than
5% and up to 20% biodiesel are
required to be labeled with the
concentration of biodiesel. When
refueling with a biodiesel blend
above B5, ensure one of the
following two labels appears on
the dispenser:
Driving and Operating
Biodiesel quality
containing more than 5% and up
to 20% biodiesel must meet the
latest version of ASTM
9-55
Blends