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Octane rating
MINIMUM OCTANE
RATING
(R + M)/2 METHOD
91
RECOMMENDED – Typical pump octane label
Volvo engines are designed to achieve rated
horsepower, torque, and fuel economy per-
formance using premium 91 octane fuel.
Volvo recommends premium for best perfor-
mance, but using 87 octane or above will not
affect engine reliability.
MINIMUM OCTANE
RATING
(R + M)/2 METHOD
87
MINIMUM – Typical pump octane label
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 advis-
able 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 neces-
sary to fill the tank more than once before a
difference in engine operation is noticeable.
06 Starting and driving
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 drivability and fuel economy. If you are
not sure whether the gasoline contains
deposit control additives, check with the ser-
vice station operator.
NOTE
Volvo does not recommend the use of
store-bought fuel injector cleaning addi-
tives.
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
labelled "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 oxy-
gen sensor system. Repeated use of leaded
gasoline will lessen the effectiveness of the
06
125
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