fuel additives VOLVO XC90 2021 Warranty and Maintenance Records Information

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SERVICE AND MAINTENANCE
Demanding driving
In demanding driving conditions, such as
operating the vehicle in hot weather, towing a
trailer, or driving for extended periods at higher
altitudes than normal, it may be advisable to
switch to higher octane fuel (91 or higher) or
to change gasoline brands to fully utilize your
engine’s capacity, and for the smoothest possible
operation.
NOTE
When switching to higher octane fuel or
changing gasoline brands, it may be necessary
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 control 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.
WARNING
California Proposition 65
Operating, servicing and maintaining a
passenger vehicle can expose you to chemicals
including engine exhaust, carbon monoxide,
phthalates, and lead, which are known to
the State of California to cause cancer and
birth defects or other reproductive harm. To
minimize exposure, avoid breathing exhaust, do
not idle the engine except as necessary, service
your vehicle in a well ventilated area and wear
gloves or wash your hands frequently when
servicing your vehicle. For more information
go to www.P 65Warnings.ca.gov/passenger-
vehicle.
Use of AdditivesWith the exception of gas line antifreeze during
winter months, do not add solvents, thickeners,
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.
Deposit control gasoline (detergent
additives)
Volvo recommends the use of detergent gasoline
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 drivability and fuel economy.
If you are not sure whether the gasoline contains
deposit control additives, check with the service
station operator.
NOTE
Volvo does not recommend the use of external
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 delivering
unleaded gasoline be labeled “UNLEADED”. Only
these pumps have nozzles which fit your vehicle’s
filler inlet. It is unlawful to dispense leaded fuel into
a vehicle labeled “unleaded gasoline only”. Leaded
gasoline damages the threeway catalytic converter
and the heated oxygen sensor system. Repeated
use of leaded gasoline will lessen the effectiveness

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SERVICE AND MAINTENANCE
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, possibly resulting in
emission test failure for misfueled vehicles.
NOTE
Some U.S. and Canadian gasolines contain
an octane enhancing additive called
methylcyclopentadienyl manganese tricarbonyl
(MMT). If such fuels are used, your Emission
Control System performance may be affected,
and the Check Engine Light (malfunction
indicator lamp) located on your instrument
panel may light. If this occurs, please return
your vehicle to an authorized Volvo retailer 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 indicating 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
seasonal air quality standards, some areas require
the use of “oxygenated” fuel.
Methanol
Do 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 system. Such damage may
not be covered under the New Vehicle Limited
Warranty.
Volvo allows the use of the following “oxygenated”
fuels; however, the octane ratings listed in your
owner’s manual must still be met.
Alcohol – Ethanol
Fuels 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.
Engine oil
This vehicle comes from the factory with
synthetic oil.
Oil specificationsFull synthetic engine oil meeting the minimum RBS0-2AE/SAE 0W20 must be used. Lower
quality oils may not offer the same fuel economy,
engine performance, or engine protection.
Volvo recommends:
Oil additives must not be used.

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SERVICE AND MAINTENANCE
Oil viscosity
Incorrect viscosity oil can shorten engine life under
normal use. SAE 0W-20 will provide good fuel
economy and engine protection.
Turbocharger Operating Tips
In order to maximize the efficiency and operation
of your vehicle, the following points should be
observed:
1. Oil change and filter replacement every
10,000 miles/16,000 km, or at a time interval
based on the type of driving and conditions as
detailed in your Owner’s Manual. You should
maintain a record of these services (repair
order receipts).
2. Do not use engine oil additives as they may
adversely affect the engine.
CAUTION
Never race the engine immediately after
starting. Oil flow may not reach some
lubricating points fast enough to prevent
turbocharger damage.
Before switching off the engine, let it operate
at idle for a short time to allow the spinning of
the turbocharger compressor’s turbine vanes to
slow. After hard driving, this idle time should last
a couple of minutes, during which the vanes will
slow and the compressor will cool down while
still receiving oil lubrication. If the turbine vanes
are spinning at high speeds when the engine is
switched off, there is a great risk of heat damage
and/or turbine seizure due to lack of lubrication. Do not race the engine just prior to switching
off!