Fuel Quality; Choosing The Right Fuel; Octane Recommendations - Ford C-MAX HYBRID Owner's Manual

FUEL QUALITY

Note: Use of any fuel other than those
recommended may cause powertrain
damage, a loss of vehicle performance and
repairs may not be covered under warranty.

Choosing the Right Fuel

Use only UNLEADED gasoline or
UNLEADED gasoline blended with a
maximum of 15% ethanol in your gasoline
vehicle. If your vehicle is a Flex Fuel Vehicle
(FFV), it will have a yellow bezel placed
over the fuel fill inlet.
Do not use:
• fuels containing more than 15%
ethanol or E-85 fuel
• fuels containing methanol
• fuels containing metallic based
additives, including manganese-based
compounds
• fuels containing the octane booster
additive, methylcyclopentadienyl
manganese tricarbonyl (MMT)
• leaded-fuel (The use of leaded fuel is
prohibited by law)
Note: Use of any fuel other than the
recommended fuel can cause powertrain
damage, impair the emission control system
or cause loss of vehicle performance. Any
damage to the vehicle that is caused by the
use of fuel not recommended will not be
covered under warranty.

Octane Recommendations

Regular unleaded gasoline with a pump
(R+M)/2 octane rating of 87 is
recommended. Some fuel stations offer
fuels posted as regular with an octane
rating below 87, particularly in high altitude
areas. Fuels with octane levels below 87
are not recommended.
C-MAX (CCG)
Fuel and Refueling
Do not be concerned if your engine
sometimes knocks lightly. However, if it
knocks heavily while you are using fuel with
the recommended octane rating, see your
authorized dealer to prevent any engine
damage.
Fuel Freshness Mode (Energi
Vehicles Only)
This feature helps keeps the fuel system
functional and the fuel fresh.
If you operate your vehicle mainly in plug-in
power mode using electricity from plugging
in without refueling, the gasoline in your
tank eventually becomes old. Old fuel can
damage the engine and fuel system.
To prevent the fuel from becoming old,
your vehicle will automatically enter fuel
freshness mode. In fuel freshness mode
operates, your vehicle will operate in hybrid
mode causing the gasoline engine to run
in order to consume the fuel in the fuel
tank.
Note: If new fuel is not added during an 18
month period, fuel freshness mode will
consume fuel until about 1 gallon (3.8 liters)
is left in the tank.
During fuel freshness mode:
•
•
•
Note: EV Now can resume if less than 1
gallon (3.8 liters) of fuel is left in the tank.
Note: In most cases, when the fuel level is
below 1/4 tank, refueling the vehicle will end
fuel freshness mode and EV Now will now
become available. Refueling after
consuming a full tank in fuel freshness mode
will end the mode.
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The information display screen will
indicate that fuel freshness mode is
active.
The vehicle will only run in hybrid mode.
EV Now will not be available.
Most of the plug-in power will be
stored until fuel freshness mode is
completed.