Volvo XC90 2015-2022 Owners Manual / Starting and driving / Octane rating

Volvo XC90: Starting and driving / Octane rating

Volvo requires premium fuel (91 octane1 or higher) for all T5, T6 and T8 engines, and recommends AKI 93 for optimal performance and fuel economy. See decal examples in illustrations 1 and 2.

Minimum octane

Decals

Volvo XC90. Octane rating

Illustration 1: Sample fuel pump octane label1.

Volvo XC90. Octane rating

Illustration 2: Decal on the inside of the fuel filler flap on vehicles that require premium fuel2.

TOP TIER Detergent Gasoline

Volvo endorses the use of "TOP TIER Detergent Gasoline" where available to help maintain engine performance and reliability. TOP TIER Detergent Gasoline meets a new standard jointly established by leading automotive manufactures to meet the needs of today's advanced engines. Qualifying gasoline retailers (stations) will, in most cases, identify their gasoline as having met the "TOP TIER Detergent Gasoline" standards.

NOTE

Information about TOP TIER Detergent Gasoline is available at toptiergas.com

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 Formulations

Do not use gasoline that contains lead or manganese 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.

Use of Additives

With 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.

Demanding driving

In demanding driving conditions, such as when towing a trailer or driving in hot weather or for prolonged periods at high altitudes, it may be a good idea to switch to a higheroctane fuel (AKI1 91 or higher) or to switch to another brand of gasoline in order to fully utilize the vehicle's engine capacity and optimize traction.

1 AKI (Anti Knock Index) is an average value of RON (Research Octane Number) and MON (Motor Octane Number) - (RON)+(MON)/2

2 For supplementary information - see the car's Service and Warranty Booklet.

    Fuel

    Volvo recommends the use of detergent gasoline to control engine deposits. Deposit control gasoline (gasoline with detergent additives) Detergent gasoline is effective in keeping injectors and intake valves clean...

    Emission controls

    Three-way catalytic converter Keep your engine properly tuned. Certain engine malfunctions, particularly involving the electrical, fuel or distributor ignition systems, may cause unusually high threeway catalytic converter temperatures...

    Other information:

    Volvo XC90 2015-2022 Owners Manual: Tire pressure monitoring system


    (Option/accessory.) The tire inflation pressure monitoring system6 provides an indicator symbol in the instrument panel if pressure is too low in one or more tires. This symbol illuminates to indicate low inflation pressure. Check the inflation pressure in the Car Status app in the center display...

    Volvo XC90 2015-2022 Owners Manual: Towing capacity and tongue weight


    Towing capacity and tongue weight are shown in the table. CAUTION The maximum trailer weights listed are only applicable for altitudes up to 3280 ft (1,000 m) above sea level. With increasing altitude the engine power and therefore the car's climbing ability are impaired because of the reduced air density, so the maximum trailer weight has to be reduced accordingly...

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