Fuel Requirements - Volvo 2006 XC70 Owner's Manual

Fuel requirements

Octane rating: Volvo engines are designed for optimum performance
on unleaded premium gasoline with an octane rating AKI of 91, or
above. AKI (ANTI KNOCK INDEX) is an average of the Research
Octane Number, RON, and the Motor Octane Number, MON. (RON +
MON/2). The minimum octane requirement is AKI 87 (RON 91).
Deposit control gasoline (detergent additives)
Unleaded fuel
NOTE: Some U.S. and Canadian gasolines contain an octane enhancing
additive called methyl-cyclopentadienyl manganese tricarbonyl (MMT).
If such fuels are used, your Emission Control System performance may
be affected, and the Check Engine light (malfunction indicator lamp)
located on your instrument panel may light. If this occurs, please return
your vehicle to an authorized Volvo retailer for service.
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Fuel requirements
Gasoline containing alcohol and ethers
"Oxygenated fuels"
Alcohol — Ethanol:
Ethers — MTBE:
CAUTION!
Do not use gasolines containing methanol (methyl alcohol, wood
alcohol). This practice can result in vehicle performance deteriora-
tion and can damage critical parts in the fuel system. Such damage
may not be covered under the New Vehicle Limited Warranty.