Dodge 2015 Charger - Owner Manual - Manual (Page 467)

Light spark knock at low engine speeds is not harmful to
your engine. However, continued heavy spark knock at
high engine speeds can cause damage and immediate
service is required.
Poor quality gasoline can cause problems such as hard
starting, stalling, and hesitations. If you experience these
symptoms, try another brand of gasoline before consid-
ering service for the vehicle. Engine damage resulting
from operating with a heavy spark knock may void or
not be covered by the New Vehicle Warranty.
5.7L Engine — If Equipped
This engine is designed to meet all emis-
sions regulations and provide satisfactory
fuel economy and performance when us-
ing high-quality unleaded gasoline having
an octane range of 87 to 89. Use of 89
octane for optimum performance is recommended. The
use of premium gasoline is not recommended, as it will
not provide any benefit over plus gasoline in these
engines.
Light spark knock at low engine speeds is not harmful to
your engine. However, continued heavy spark knock at
high speeds can cause damage and immediate service is
required. Engine damage resulting from operating with a
heavy spark knock may void or not be covered by the
new vehicle warranty.
Poor quality gasoline can cause problems such as hard
starting, stalling, and hesitations. If you experience these
symptoms, try another brand of gasoline before consid-
ering service for the vehicle.
5
STARTING AND OPERATING 465