Gasoline/Oxygenate Blends; Compressed Natural Gas (Cng) And Liquid Propane (Lp) Fuel System; Modifications; Methylcyclopentadienyl Manganese Tricarbonyl (Mmt) - RAM 1500 2025 Owner's Manual

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TECHNICAL SPECIFICATIONS
Designated TOP TIER Detergent Gasoline
contains a higher level of detergents to
further aide in minimizing engine and fuel
system deposits. When available, the usage
of TOP TIER Detergent Gasoline is recommended. Visit
www.toptiergas.com
for a list of TOP TIER Detergent
Gasoline retailers.
Indiscriminate use of fuel system cleaning agents
should be avoided. Many of these materials intended
for gum and varnish removal may contain active
solvents or similar ingredients. These can harm fuel
system gasket and diaphragm materials.
G
/O
B
ASOLINE
XYGENATE
LENDS
Some fuel suppliers blend unleaded gasoline with
oxygenates such as ethanol.
CAUTION!
DO NOT use E-85, gasoline containing methanol,
or gasoline containing more than 15% ethanol
(E-15). Use of these blends may result in starting
and drivability problems, damage critical fuel
system components, cause emissions to exceed the
applicable standard, and/or cause the Malfunction
Indicator Light to illuminate. Please observe pump
labels as they should clearly communicate if a fuel
contains greater than 15% ethanol (E-15).
Problems that result from using gasoline containing
more than 15% ethanol (E-15) or gasoline containing
methanol are not the responsibility of the manufacturer
and may void the New Vehicle Limited Warranty.
D
N
U
E-85 I
N
-F
O
OT
SE
N
ON
V
EHICLES
Non-Flex Fuel Vehicles (FFV) are compatible with
gasoline containing up to 15% ethanol (E-15). Use of
gasoline with higher ethanol content may void the New
Vehicle Limited Warranty.
If a Non-FFV vehicle is inadvertently fueled with E-85
fuel, the engine will have some or all of these
symptoms:
Operate in a lean mode.
OBD II Malfunction Indicator Light on.
Poor engine performance.
Poor cold start and cold drivability.
Increased risk for fuel system component corrosion.
C
N
G
(CNG) A
OMPRESSED
ATURAL
AS
L
P
(LP) F
S
IQUID
ROPANE
UEL
M
ODIFICATIONS
Modifications that allow the engine to run on
Compressed Natural Gas (CNG) or Liquid Propane (LP)
may result in damage to the engine, emissions, and
fuel system components. Problems that result from
running CNG or LP are not the responsibility of the
manufacturer and may void the New Vehicle Limited
Warranty.
F
M
LEX
UEL
ETHYLCYCLOPENTADIENYL
T
RICARBONYL
MMT is a manganese-containing metallic additive that
is blended into some gasolines to increase octane.
Gasoline blended with MMT provides no performance
advantage beyond gasoline of the same octane
number without MMT. Gasoline blended with MMT
reduces spark plug life and reduces emissions system
performance in some vehicles. The manufacturer
recommends that gasoline without MMT be used in
your vehicle. The MMT content of gasoline may not
be indicated on the gasoline pump; therefore, you
should ask the gasoline retailer whether or not the
gasoline contains MMT. MMT is prohibited in Federal
and California reformulated gasoline.
F
S
UEL
YSTEM
ND
YSTEM
Follow these guidelines to maintain your vehicle's
performance:
The use of leaded gasoline is prohibited by Federal
law. Using leaded gasoline can impair engine
performance and damage the emissions control
system.
An out-of-tune engine or certain fuel or ignition
malfunctions can cause the catalytic converter to
overheat. If you notice a pungent burning odor
or some light smoke, your engine may be out of
tune or malfunctioning and may require immediate
M
ANGANESE
(MMT)
C
AUTIONS
CAUTION!
(Continued)

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