06 Starting and drivingFuel requirements
06140
Octane ratingMinimum octane
G028920
Typical pump octane labelVolvo recommends premium fuel for best per-
formance, but using 87 octane 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 to
change gasoline brands to fully utilize yourengine'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.
11 SpecificationsEngine specifications
11270
Engine designation
B5244S4
B5244S7
A
B5254T7
Output
B
kW/rps
125/100
123/100
169/83
hp/rpm
168/6000
165/6000
227/5000
Torque
Nm/rps
230/73
230/73
320/25-80
ft. lbs./rpm
170/4400
170/4400
236/1500-4800
No. of cylinders
5
5
5
Displacement (liters/cubic inches)
2.44/148.6
2.44/148.6
2.52/153.8
Bore (mm/in.)
83/3.27
83/3.27
83/3.27
Stroke (mm/in.)
90/3.54
90/3.54
93.2/3.67
Compression ratio
10.3:1
10.3:1
9.0:1
Spark plugstype
Volvo kit no. 30650843
Volvo kit no. 30650843
Volvo kit no. 30650379
gap inches/mm
(3x) 0.024 ± 0.004 in./0.6
± 0.1mm
(3x) 0.024 ± 0.004 in./0.6
± 0.1mm
0.027in./0.7mm
tightening torque ft. lbs./Nm
22.5 ft. lbs./30 Nm
22.5 ft. lbs./30 Nm
22.5 ft. lbs./30 Nm
ACertain marketsBThe engine specifications for horsepower and torque listed in this table are based on the use of premium fuel.
