V8 Engines); Prohibited Fuels; Fuel Additives; Filling The Tank - Cadillac CTS-V 2019 Owner's Manual

236 DRIVING AND OPERATING
heard when using gasoline rated at 91
RON or higher, the engine needs
service.
Recommended Fuel
(LF3 3.6L V6 Twin Turbo
and LT4 6.2L V8 Engines)
Use the recommended fuel for proper
vehicle maintenance.
Use unleaded petrol with a posted
octane rating of 95 RON or higher and
with ethanol up to 10% by volume.
If the octane is less than 95 RON, the
engine could be damaged and repairs
would not be covered by the vehicle
warranty. If heavy knocking is heard
when using petrol rated at 95 RON
octane, the engine needs service.

Prohibited Fuels

Caution
Do not use fuels with any of the
following conditions; doing so may
damage the vehicle and void its
warranty:
Fuel with any amount of
methanol, methylal, ferrocene,
and aniline. These fuels can
corrode metal fuel system
parts or damage plastic and
rubber parts.
Fuel containing metals such
as methylcyclopentadienyl
manganese tricarbonyl
(MMT), which can damage
the emissions control system
and spark plugs.
Fuel with a posted octane
rating of less than the
recommended fuel. Using this
fuel will lower fuel economy
and performance, and may
decrease the life of the
emissions catalyst.

Fuel Additives

TOP TIER Detergent Gasoline is highly
recommended for use with your
vehicle. If your country does not have
TOP TIER Detergent Gasoline, add
ACDelco Fuel System Treatment
Plus-Gasoline to the vehicle s gasoline
fuel tank at every oil change or
15,000 km (9,000 mi), whichever
occurs first. TOP TIER Detergent
Gasoline and ACDelco Fuel System
Treatment Plus-Gasoline will help
keep your vehicle s engine fuel deposit
free and performing optimally. If you
are unable to obtain ACDelco Fuel
System Treatment Plus - Gasoline,
consult your dealer for the GM
approved additive available in your
country.

Filling the Tank

Warning
Fuel vapors and fuel fires burn
violently and can cause injury or
death.