Starting and driving

Fuel

~2min read

Volvo recommends using detergent gasoline to control engine deposits.

Deposit control gasoline (gasoline with enhanced additives)

Deposit control gasolines are effective in keeping fuel injectors and intake valves clean. Consistent use of deposit control gasolines will help ensure good driveability and fuel economy. If you are not sure whether the gasoline contains deposit control additives, check with the service station operator.

NOTE

Volvo does not recommend the use of external fuel injector cleaning systems. Do not add detergent additives to gasoline before or after refueling.

Unleaded fuel

All Volvo vehicles have a three-way catalytic converter and must only use unleaded gasoline. US and Canadian regulations require that pumps delivering unleaded gasoline are labeled "UNLEADED". Only the nozzles of these pumps will fit in your vehicle's fuel filler inlet. It is unlawful to dispense leaded fuel into a vehicle labeled "unleaded gasoline only".

Leaded gasoline damages the three-way catalytic converter and the heated oxygen sensor system. Repeated use of leaded gasoline will lessen the effectiveness of the emission control system and could result in loss of emission warranty coverage. State and local vehicle inspection programs will make detection of misfueling easier, possibly resulting in emission test failure for misfueled vehicles.

Gasoline containing alcohol and ethers, "oxygenated fuel"

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 indicating 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 permits the use of the following "oxygenated" fuels. However, the specified octane ratings must still be met.

Alcohol - ethanol

Fuel containing up to 10% ethanol by volume may be used. Ethanol may also be referred to as ethyl alcohol, or "gasohol".

Ethers - MTBE/ETBE: fuel containing up to 22% MTBE/ETBE by volume.

Methanol

Do not use gasolines containing methanol (methyl alcohol, wood alcohol). This practice can result in vehicle performance deterioration and can damage critical parts in the fuel system. Such damage may not be covered under the New Vehicle Limited Warranty.

Test yourself

A quick Volvo XC90 quiz: every answer comes with an explanation and a link to the manual page.