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Old 10-09-2009, 09:08 AM
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CHILLZ HEMI CHILLZ HEMI is offline
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Join Date: Sep 2009
Location: Virginia Beach, VA
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Vehicle: 2008 Dodge Ram 5.7L HEMI
Trim Level: Big Horn, Quad Cab
Color: Black
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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I use 87 octane

FUEL REQUIREMENTS
All engines (except 5.7L engines) are designed
to meet all emissions regulations
and provide excellent fuel economy and
performance when using high-quality unleaded
“regular” gasoline having an octane
rating of 87. The use of premium
gasoline is not recommended. Under normal
conditions, the use of premium gasoline will not
provide a benefit over high-quality regular gasolines, and
in some circumstances may result in poorer performance.

The 5.7L engine is designed to meet all
emissions regulations and provide satisfactory
fuel economy and performance when
using high-quality unleaded gasoline having
an octane range of 87 to 89.
The manufacturer
recommends the use of 89 octanefor optimum performance
. The use of premium gasoline
is not recommended. Under normal conditions, the use of
premium gasoline will not provide a benefit over highquality
regular and mid-grade gasolines, and in some
circumstances may result in poorer performance.
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.
Poor quality gasoline can cause problems such as hard
starting, stalling and hesitations. If you experience these
symptoms, try another brand of “regular” gasoline before
considering service for the vehicle.
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