06 Starting And Driving; General Information - Volvo XC90 Owner's Manual

06 Starting and driving

General information

Engine oil
Although some oil consumption occurs dur-
ing normal engine operation, more oil is con-
sumed when the engine is new as the internal
parts generate higher friction while wearing-in
to each other. From the time the engine is
new until the first maintenance is performed,
the oil consumption could be higher than nor-
mal. For this reason, it is especially important
to check the oil regularly during this period,
see page 222.
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
06 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
external fuel injector cleaning systems.
138
Unleaded fuel
Each Volvo has a three-way catalytic con-
verter and must use only unleaded gasoline.
U.S. and Canadian regulations require that
pumps delivering unleaded gasoline be label-
led "UNLEADED". Only these pumps have
nozzles which fit your vehicle's filler inlet. It is
unlawful to dispense leaded fuel into a vehicle
labelled "unleaded gasoline only". Leaded
gasoline damages the three-way catalytic
converter and the heated oxygen sensor sys-
tem. Repeated use of leaded gasoline will
lessen the effectiveness of the emission con-
trol system and could result in loss of emis-
sion warranty coverage. State and local vehi-
cle inspection programs will make detection
of misfueling easier, possibly resulting in
emission test failure for misfueled vehicles.
NOTE
Some U.S. and Canadian gasolines con-
tain an octane enhancing additive called
methyl-cyclopentadienyl manganese tri-
carbonyl (MMT). If such fuels are used,
your Emission Control System perform-
ance 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 a trained and qualified Volvo
service technician for maintenance.
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 seasonal air quality standards, some
areas require the use of "oxygenated" fuel.
Volvo allows the use of the following "oxy-
genated" fuels; however, the octane ratings
listed on page 139 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.