Fuel Requirements - Gasoline Engine; 3.6L Engine - Jeep grand cherokee 2017 User Manual

FUEL REQUIREMENTS —
GASOLINE ENGINE

3.6L Engine

Do not use E-85 flex fuel or ethanol blends
greater than 15% in this engine.
These engines are de-
signed to meet all
emissions regulations
and provide optimum
fuel economy and per-
formance when using
high quality unleaded
"Regular"
having a posted octane number of 87 as
specified by the (R+M)/2 method. The use of
higher octane "Premium" gasoline is not re-
quired, as it will not provide any benefit over
"Regular" gasoline in these engines.
While operating on gasoline with an octane
number of 87, hearing a light knocking sound
from the engine is not a cause for concern.
However, if the engine is heard making a
heavy knocking sound, see your dealer imme-
276
diately. Use of gasoline with an octane num-
ber lower than 87 can cause engine failure
and may void or not be covered by the New
Vehicle Limited Warranty.
Poor quality gasoline can cause problems
such as hard starting, stalling, and hesita-
tions. If you experience these symptoms, try
another brand of gasoline before considering
service for the vehicle.
5.7L Engine
Do not use E-85 flex fuel or ethanol blends
greater than 15% in this engine.
gasoline
an octane range of 87 to 89 as specified by
the (R+M)/2 method. The use of 89 octane
"Plus" gasoline is recommended for opti-
mum performance and fuel economy.
While operating on gasoline with an octane
number of 87, hearing a light knocking sound
from the engine is not a cause for concern.
However, if the engine is heard making a
heavy knocking sound, see your dealer imme-
diately. Use of gasoline with an octane num-
ber lower than 87 can cause engine failure
and may void or not be covered by the New
Vehicle Limited Warranty.
Poor quality gasoline can cause problems
such as hard starting, stalling, and hesita-
tions. If you experience these symptoms, try
another brand of gasoline before considering
service for the vehicle.
This engine is de-
signed to meet all 6.4L Engine
emissions regulations
Do not use E-85 flex fuel or ethanol blends
and provide satisfac-
greater than 15% in this engine.
tory fuel economy and
performance when us-
ing high-quality un-
leaded gasoline having
This engine is de-
signed to meet all
emission regulations,
provide optimal fuel
economy and perfor-
mance when using
high-quality unleaded