Recommended Fuel (2.0L L4 Turbo Engine); Recommended Fuel; V6 Engine) - Cadillac XT6 2023 Owner's Manual

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applicable countries.

Recommended Fuel

(2.0L L4 Turbo
Engine)
Premium unleaded gasoline
meeting ASTM specification
D4814 with a posted octane
rating (R+M)/2 of 91 or greater
is recommended. If unavailable,
unleaded gasoline with a
posted octane rating of
87 may be used, but will result
in reduced performance and
driveability. If heavy knocking
is heard when using gasoline
rated at 91 or greater, the
engine needs service.
Do not use any fuel labeled
E85 or FlexFuel. Do not use
gasoline with ethanol levels
greater than 15% by volume.
Driving and Operating
Recommended Fuel
(3.6L V6 Engine)
Regular unleaded gasoline
meeting ASTM specification
D4814 with a posted octane
rating (R+M)/2 of 87 or
greater is recommended. Do
not use gasoline with a posted
octane rating of less than 87,
as this will result in reduced
performance and driveability.
If heavy knocking is heard
when using gasoline rated at
87 or greater, the engine
needs service.
Do not use any fuel labeled
E85 or FlexFuel. Do not use
gasoline with ethanol levels
greater than 15% by volume.
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