Volvo XC40 2019 Owner's Manual page 399

Octane rating
Volvo requires premium fuel (91 octane
higher) for all T5, T6 and T8 engines, and rec-
ommends AKI 93 for optimal performance
and fuel economy. See decal examples in
illustrations 1 and 2.
For optimal performance, Volvo recommends
premium fuel (91 16 octane and higher) for T4
engines. However, engine reliability should
not be affected as long as 87 octane
higher is used. See decal example in illustra-
tion 3.
Minimum octane
Decals
Illustration 1: Sample fuel pump octane label
16 AKI (Anti Knock Index) is an average value of RON (Research Octane Number) and MON (Motor Octane Number) - (RON)+(MON)/2
17 For supplementary information - see the car's Service and Warranty Booklet.
16 or
Illustration 2: Decal on the inside of the fuel filler flap
16
or
on vehicles that require premium fuel
Illustration 3: Sample fuel pump octane label
TOP TIER Detergent Gasoline
Volvo endorses the use of "TOP TIER Deter-
gent Gasoline" where available to help main-
16
. tain engine performance and reliability. TOP
TIER Detergent Gasoline meets a new stand-
ard jointly established by leading automotive
manufactures to meet the needs of today's
advanced engines. Qualifying gasoline retail-
ers (stations) will, in most cases, identify their
gasoline as having met the "TOP TIER Deter-
gent Gasoline" standards.
NOTE
Information about TOP TIER Detergent
17
.
Gasoline is available at
www.toptiergas.com.
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 noticea-
ble.
Fuel Formulations
Do not use gasoline that contains lead or man-
16
.
ganese 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.
STARTING AND DRIVING
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