302
STARTING AND OPERATING
FUEL REQUIREMENTS
Engines (If Equipped)
All engines (excep t 5.7L engines) are de-
signed to meet all emissions regu lations
and provid e excellent fuel econom y and
perform ance when using high quality un-
lead ed “regu lar” gasoline having an oc-
tane rating of 87. The use of prem ium
using high quality unlead ed gasoline having an octane
range of 87 to 89. The manu factu rer recom mend s the use
of 89 octane for optimum perform ance. The use of
prem ium gasoline is not recom mend ed. Und er norm al
cond itions, the use of prem ium gasoline will not provid e
a benefit over high quality regu lar and mid-grad e gaso-
lines, and in som e circumstances may resu lt in poorer
perform ance.
3.7/4.7L
gasoline is not recom mend ed. Und er norm al cond itions,
the use of prem ium gasoline will not provid e a benefit
over high quality regu lar gasolines, and in som e circum-
stances may resu lt in poorer perform ance.
Light spark knock at low engine speed s is not harm ful to
you r engine. However, continu ed heavy spark knock at
high speed s can cause damage and immediate service is
requ ired .
5.7L
Engines (If Equipped)
The 5.7L engine is designed to meet all
emissions regu lations and provid e satisfac-
tory fuel econom y and perform ance when
Poor quality gasoline can cause problem s such as hard
starting, stalling and hesitations. If you experience these
sym ptom s, try another brand of gasoline before consid -
ering service for the vehicle.
| Categories | Jeep Grand Cherokee Manuals, Jeep Manuals |
|---|---|
| Model Year | 2006 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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