Fuel 285 |
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7-1 . Fuel
CAUTION
s07aa
. Use of a fuel which is low in quality or use of an inappropriate fuel additive may cause damage to the engine and / or fuel system .
. Some gas stations , particularly those in high altitude areas , offer fuels posted as regular octane gasoline with an octane rating below 87 AKI ( 90 RON ). Use of those fuels are not recommended .
& Fuel Requirements s07aa01
The engine is designed to operate using unleaded gasoline with an octane rating of 91 AKI ( 95 RON ) or higher . If 91 AKI ( 95 RON ) fuel is not readily available , unleaded gasoline with an octane rating of 87 AKI ( 90 RON ) may be used .
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Regular unleaded gasoline with an octane rating of 87 AKI ( 90 RON ) or higher may also be used . Using regular unleaded gasoline will not be detrimental to engine durability , nor will it affect your warranty coverage . However , depending on your driving habits and conditions , you may |
notice a decrease in maximum engine performance , fuel economy or slight engine vibration or knocking . If you experience any of these conditions while using a lower octane rated fuel , you may want to return to using 91 AKI ( 95 RON ) octane rated fuel as soon as possible . Additionally , if your vehicle knocks heavily or persistently , the use of 91 AKI ( 95 RON ) or higher grade unleaded gasoline is required .
! Fuel octane rating s07aa0103
Using a gasoline with a lower octane rating can cause persistent and heavy knocking , which can damage the engine . Do not be concerned if your vehicle sometimes knocks lightly when you drive up a hill or when you accelerate . See your dealer or a qualified service technician if you use a fuel with the specified octane rating and your vehicle knocks heavily or persistently .
! RON s07aa010301
This octane rating is the Research Octane Number .
! AKI s07aa010302
This octane rating is the average of the Research Octane and Motor Octane numbers and is commonly referred to as the Anti Knock Index ( AKI ).
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! Unleaded gasoline s07aa0104
The neck of the fuel filler pipe is designed to accept only an unleaded gasoline filler nozzle . Under no circumstances should leaded gasoline be used because it will damage the emission control system and may impair driveability and fuel economy .
! Reformulated gasoline s07aa0128
SUBARU supports the use of reformulated gasoline when available . Reformulated gasoline has been blended to burn more cleanly and reduce vehicle emissions .
! MMT s07aa0106
Some gasoline contains an octane-enhancing additive called MMT ( Methylcyclopentadienyl Manganese Tricarbonyl ). If you use such fuels , your emission control system performance may deteriorate and the CHECK ENGINE warning light / malfunction indicator light may turn on . If this happens , return to your authorized SUBARU Dealer for service . If it is determined that the condition is caused by the type of fuel used , repairs may not be covered by your warranty .
! Gasoline for cleaner air s07aa0129
Your use of gasoline with detergent additives will help prevent deposits from forming in your engine and fuel system . This helps keep your engine in tune and
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7
Starting and Operating
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