2011 VOLVO XC70 engine

05 During your trip
Refueling
05
206
Fuel requirements
Deposit control gasoline (detergent
additives)
Volvo recommends the use of detergent gas-
oline to control engine deposits. Detergent
gasoline is effective in keeping injectors and
intake valves clean. Consistent use of deposit
control gasolines will help ensure good driva-
bility and fuel economy. If you are not sure
whether the gasoline contains deposit control
additives, check with the service station oper-
ator.
NOTE
Volvo does not recommend the use of exter-
nal fuel injector cleaning systems.
Unleaded fuelEach Volvo has a three-way catalytic converter
and must use only unleaded gasoline. U.S. and
Canadian regulations require that pumps deliv-
ering unleaded gasoline be labelled "UNLEA-
DED". Only these pumps have nozzles which
fit your vehicle's filler inlet. It is unlawful to dis-
pense leaded fuel into a vehicle labelled
"unleaded gasoline only". Leaded gasoline
damages the three-way catalytic converter and
the heated oxygen sensor system. Repeated
use of leaded gasoline will lessen the effective-ness of the emission control system and could
result in loss of emission warranty coverage.
State and local vehicle inspection programs
will make detection of misfueling easier, pos-
sibly resulting in emission test failure for mis-
fueled vehicles.
NOTE
Some U.S. and Canadian gasolines contain
an octane enhancing additive called methyl-
cyclopentadienyl manganese tricarbonyl
(MMT). If such fuels are used, your Emission
Control System performance may be affec-
ted, and the Check Engine Light (malfunc-
tion indicator light) located on your instru-
ment panel may light. If this occurs, please
return your vehicle to a trained and qualified
Volvo service technician for service.
Gasoline containing alcohol and ethers,
"Oxygenated fuels"
Some fuel suppliers sell gasoline containing
"oxygenates" which are usually alcohols or
ethers. In some areas, state or local laws
require that the service pump be marked indi-
cating use of alcohols or ethers. However,
there are areas in which the pumps are
unmarked. If you are not sure whether there is
alcohol or ethers in the gasoline you buy, check
with the service station operator. To meet sea-sonal air quality standards, some areas require
the use of "oxygenated" fuel.
Volvo allows the use of the following "oxygen-
ated" fuels; however, the octane ratings listed
on page 207 must still be met.
Alcohol – EthanolFuels containing up to 10% ethanol by volume
may be used. Ethanol may also be referred to
as Ethyl alcohol, or "Gasohol".
Ethers – MTBE: Fuels containing up to
15% MTBE may be used.
MethanolDo not use gasolines containing methanol
(methyl alcohol, wood alcohol). This practice
can result in vehicle performance deterioration
and can damage critical parts in the fuel sys-
tem. Such damage may not be covered under
the New Vehicle Limited Warranty.

05 During your trip
Refueling
05

207 Octane rating
Minimum octane
G028920
Typical pump octane label
Volvo recommends premium fuel for best per-
formance, but using 87 octane1 or above will
not affect engine reliability.
Volvo engines are designed to achieve rated
horsepower, torque, and fuel economy per-
formance using premium 91 octane fuel.
Demanding drivingIn demanding driving conditions, such as oper-
ating the vehicle in hot weather, towing a trailer,
or driving for extended periods at higher alti-
tudes than normal, it may be advisable to
switch to higher octane fuel (91 or higher) or tochange gasoline brands to fully utilize your
engine's capacity, and for the smoothest pos-
sible operation.
NOTE
When switching to higher octane fuel or
changing gasoline brands, it may be neces-
sary to fill the tank more than once before a
difference in engine operation is noticeable.
Fuel FormulationsDo not use gasoline that contains lead as a
knock inhibitor, and do not use lead additives.
Besides damaging the exhaust emission con-
trol systems on your vehicle, lead has been
strongly linked to certain forms of cancer.
Many fuels contain benzene as a solvent.
Unburned benzene has been strongly linked to
certain forms of cancer. If you live in an area
where you must fill your own gas tank, take
precautions. These may include:
•standing upwind away from the filler nozzle
while refueling
•refueling only at gas stations with vapor
recovery systems that fully seal the mouth
of the filler neck during refueling
•wearing neoprene gloves while handling a
fuel filler nozzle.
Use of AdditivesWith the exception of gas line antifreeze during
winter months, do not add solvents, thicken-
ers, or other store-bought additives to your
vehicle's fuel, cooling, or lubricating systems.
Overuse may damage your engine, and some
of these additives contain organically volatile
chemicals. Do not needlessly expose yourself
to these chemicals.
WARNING
Never carry a cell phone that is switched
on while refueling your vehicle. If the phone
rings, this may cause a spark that could
ignite gasoline fumes, resulting in fire and
injury.
WARNING
Carbon monoxide is a poisonous, colorless,
and odorless gas. It is present in all exhaust
gases. If you ever smell exhaust fumes
inside the vehicle, make sure the passenger
compartment is ventilated, and immediately
return the vehicle to a trained and qualified
Volvo service technician for correction.
1AKI (ANTI KNOCK INDEX) is an average of the Research Octane Number (RON) and the Motor Octane Number (MON), MON+RON/2.

05 During your trip
Refueling
05

209
Opening/closing the fuel cap
G022915
Fuel vapor expands in hot weather. Open the
filler cap slowly.
After refueling, close the fuel filler cap by turn-
ing it clockwise until it clicks into place.
CAUTION
•Do not refuel with the engine running2.
Turn the ignition off or to position I. If the
ignition is on, an incorrect reading could
occur in the fuel gauge.
•Avoid overfilling the fuel tank. Do not
press the handle on the filler nozzle
more than one extra time. Too much fuel
in the tank in hot weather conditions can
cause the fuel to overflow. Overfilling
could also cause damage to the emis-
sion control systems.
Emission controls
Three-way catalytic converter
•Keep your engine properly tuned. Certain
engine malfunctions, particularly involving
the electrical, fuel or distributor ignition
systems, may cause unusually high three-
way catalytic converter temperatures. Do
not continue to operate your vehicle if you
detect engine misfire, noticeable loss of
power or other unusual operating condi-
tions, such as engine overheating or back-
firing. A properly tuned engine will helpavoid malfunctions that could damage the
three-way catalytic converter.
•Do not park your vehicle over combustible
materials, such as grass or leaves, which
can come into contact with the hot exhaust
system and cause such materials to ignite
under certain wind and weather condi-
tions.
•Excessive starter cranking (in excess of
one minute), or an intermittently firing or
flooded engine can cause three-way cata-
lytic converter or exhaust system over-
heating.
•Remember that tampering or unauthorized
modifications to the engine, the Engine
Control Module, or the vehicle may be ille-
gal and can cause three-way catalytic con-
verter or exhaust system overheating. This
includes: altering fuel injection settings or
components, altering emission system
components or location or removing com-
ponents, and/or repeated use of leaded
fuel.
NOTE
Unleaded fuel is required for vehicles with
three-way catalytic converters.
2If the fuel filler cap is not closed tightly or if the engine is running when the vehicle is refueled, the Check Engine Light (malfunction indicator lamp) may indicate a fault. However, your vehicle's
performance will not be affected. Use only Volvo original or approved fuel filler caps.

05 During your trip
Refueling
05
210
Heated oxygen sensorsThe heated oxygen sensors monitor the oxy-
gen content of the exhaust gases. Readings
are fed into a control module that continuously
monitors engine functions and controls fuel
injection. The ratio of fuel to air into the engine
is continuously adjusted for efficient combus-
tion to help reduce harmful emissions.

05 During your trip
Loading
05

* Option/accessory, for more information, see Introduction.211 Introduction
The load carrying capacity of your vehicle is
determined by factors such as the number of
passengers, the amount of cargo, the weight
of any accessories that may be installed, etc.
To increase loading space, the rear seat backr-
ests can be folded down, see page 84.
When loading the cargo area, keep the follow-
ing in mind:
•Load objects in the cargo area against the
backrest whenever possible.
•Unstable loads can be secured to the load
anchoring eyelets with straps or web lash-
ings to help keep them from shifting.
•Stop the engine and apply the parking
brake when loading or unloading long
objects. The gear selector can be knocked
out of position by long loads, which could
set the vehicle in motion.
WARNING
•Stop the engine, put the gear selector in
P, and apply the parking brake when
loading or unloading long objects.
•The vehicle's driving characteristics
may change depending on the weight
and distribution of the load.
•A 44-pound (20 kg) object produces a
force of 2,200 pounds (1,000 kg) in a
head-on collision at 30 mph (50 km/h).
•The cargo area and rear seat should not
be loaded to a level higher than 2 in.
(5 cm) below the upper edge of the rear
side windows. Objects placed higher
than this level could impede the func-
tion of the Inflatable Curtain.
Power tailgate*
G017876
Power tailgate closing button
Automatic openingThe power tailgate can be opened automati-
cally in the three ways:
•By pressing and holding the but-
ton on the lighting panel until the tailgate
begins to open.
•By pressing and holding the button
on the remote key until the tailgate begins
to open.
•By pulling the outer handle on the tailgate.
The taillights illuminate automatically when the
automatic open function is used.

05 During your trip
Loading
05

213 Load anchoring eyelets
The load anchoring eyelets on both sides of the
vehicle are used to fasten straps, etc., to help
anchor items in the cargo area.
WARNING
•Cover sharp edges on long loads to help
prevent injury to occupants. Secure the
load to help prevent shifting during sud-
den stops.
•Always secure large and heavy objects
with a seat belt or cargo retaining
straps.
•Always secure the load to help prevent
it from moving in the event of sudden
stops.
•Switch off the engine, apply the parking
brake and put the gear selector in P
when loading and unloading the vehicle.
Cargo area floor rails and hooks
Load secured in upper and lower hooks
The floor of the cargo compartment has rails
on opposite sides of the vehicle equipped with
hooks for anchoring loads with straps, nets,
etc.
Cleaning the railsDirt or other small objects that collect in the
rails can make moving, locking, unlocking, and
removing the hooks more difficult. Objects can
be removed from the rails with a vacuum
cleaner, and the rails can be cleaned with a
moist cloth.
Moving the load anchoring hooks
G017742
To move a hook, fold it down in the direc-
tion in which its opening points.
Press the hook down lightly and move it to
the desired position.

05 During your trip
Loading
05
214
Fold up the hook. It will lock in place.
NOTE
There should be at least 2 in. (50 cm)
between the hooks in the rail.
WARNING
Switch off the engine, apply the parking
brake and put the gear selector in P when
loading and unloading the vehicle.
Removing a hook
G018134
The load-securing hooks can easily be
removed, for example, to clean the rail.
To remove a hook, fold it down in the direc-
tion in which its opening points.
Press the hook down lightly and move the
it to an opening in the rail.
Pull the hook straight up.
Replace a hook in the rail in the reverse order.
NOTE
In order to return a removed hook into a rail,
it must be pressed down lightly.
Reinserting a hook
G019581
Upper illustration: hooks correctly installed, Lower
illustration: hooks incorrectly installed
It is important to insert the hooks correctly in
the rails. The hooks' openings should point
away from each other.
•The opening on the hook closest to the rear
seat backrest should point toward the
backrest.
•The opening on the hook closest to the
tailgate should point toward the tailgate.
WARNING
The hooks must be installed correctly in the
rail. Incorrectly installed hooks will be folded
down by the strap, allowing them to move.
The load will then no longer be securely
anchored.
Straps for securing loads
G019397
Securing loads
Wrapping straps a full turn around the hooks
helps keep them in place.

05 During your trip
Towing a trailer
05
220
Introduction
Volvo recommends the use of Volvo trailer
hitches that are specially designed for the vehi-
cle.
NOTE
See page 295 for the maximum trailer and
tongue weights recommended by Volvo.
•Observe the legal requirements of the
state/province in which the vehicles are
•All Volvo models are equipped with
energy-absorbing shock-mounted bump-
ers. Trailer hitch installation should not
interfere with the proper operation of this
bumper system.
Trailer towing does not normally present any
particular problems, but take into considera-
tion:
•Increase tire pressure to recommended full
pressure. See the tire inflation tables
beginning on page 231.
•When your vehicle is new, avoid towing
heavy trailers during the first 620 miles
(1,000 km).
•Maximum speed when towing a trailer:
50 mph (80 km/h).
•Engine and transmission are subject to
increased loads. Therefore, engine coolant
temperature should be closely watchedwhen driving in hot climates or hilly terrain.
Use a lower gear and turn off the air con-
ditioner if the temperature gauge needle
enters the red range.
•If the automatic transmission begins to
overheat, a message will be displayed in
the text window.
•Avoid overload and other abusive opera-
tion.
•Hauling a trailer affects handling, durabil-
ity, and economy.
•It is necessary to balance trailer brakes
with the towing vehicle brakes to provide a
safe stop (check and observe state/local
regulations).
•Do not connect the trailer's brake system
directly to the vehicle's brake system.
•More frequent vehicle maintenance is
required.
•Remove the ball and drawbar assembly
when the hitch is not being used.
•Volvo recommends the use of synthetic
engine oil when towing a trailer over long
distances or in mountainous areas.
WARNING
•Bumper-attached trailer hitches must
not be used on Volvos, nor should
safety chains be attached to the
bumper.
•Trailer hitches attaching to the vehicle
rear axle must not be used.
•Never connect a trailer's hydraulic
brake system directly to the vehicle
brake system, nor a trailer's lighting
system directly to the vehicle lighting
system. Consult your nearest author-
ized Volvo retailer for correct installa-
tion.
•When towing a trailer, the trailer's safety
wire must be correctly fastened to the
hole or hook provided in the trailer hitch
on the vehicle. The safety wire should
never be fastened to or wound around
the drawbar ball.