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TECHNICAL SPECIFICATIONS 281
FUEL REQUIREMENTS
3.6L Engine
This engine is designed to meet all
emissions regulations and provide
excellent fuel economy and perfor-
mance when using high-quality
unleaded “Regular” gasoline having an octane
rating of 87 as specified by the (R+M)/2 method.
The use of higher octane “Premium” gasoline 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 immediately.
Use of gasoline with an octane number 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 hesitations. 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.
This engine is designed to meet all
emissions regulations and provide
satisfactory fuel economy and perfor-
mance when using high-quality
unleaded gasoline having an octane range of
87 to 89 as specified by the (R+M)/2 method.
The use of 89 octane “Plus” gasoline is recom-
mended for optimum 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 immediately.
Use of gasoline with an octane number 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 hesitations. If you
experience these symptoms, try another brand
of gasoline before considering service for the
vehicle.
Reformulated Gasoline
Many areas of the country require the use of
cleaner burning gasoline referred to as “Refor-
mulated Gasoline”. Reformulated gasoline
contains oxygenates and are specifically
blended to reduce vehicle emissions and
improve air quality.
The use of reformulated gasoline is recom-
mended. Properly blended reformulated gaso-
line will provide improved performance and
durability of engine and fuel system compo-
nents.
Materials Added To Fuel
Besides using unleaded gasoline with the proper
octane rating, gasolines that contain detergents,
corrosion and stability additives are recom-
mended. Using gasolines that have these addi-
tives will help improve fuel economy, reduce
emissions, and maintain vehicle performance.
Designated TOP TIER Detergent Gaso-
line contains a higher level of deter-
gents to further aide in minimizing
engine and fuel system deposits. When
available, the usage of TOP TIER Detergent Gaso-
line is recommended. Visit www.toptiergas.com
for a list of TOP TIER Detergent Gasoline
Retailers.
8
20_LX_OM_EN_US_t.book Page 281
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