Fuel Additives (Diesel); Fuel Additives (Petrol); Fuel For Diesel Engines - Cadillac XT4 2023 Owner's Manual

234 Driving and Operating
Caution (Continued)
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 (Diesel)

GM recommends the use of ACDelco Diesel
Fuel conditioner. This will help maintain
optimal engine performance. GM does not
recommend other aftermarket diesel
additives.
In the event you refuel using low-quality
diesel, GM recommends adding ACDelco Fuel
System Treatment Plus-Diesel to the
vehicle's fuel tank. ACDelco Fuel System
Treatment Plus-Diesel can help clean engine
deposits and is available at your GM
dealership.

Fuel Additives (Petrol)

TOP TIER Detergent Gasoline is highly
recommended for use with your vehicle.
If your country does not have TOP TIER
Detergent Petrol, add ACDelco Fuel System
Treatment Plus-Petrol to the vehicle's petrol
fuel tank at every oil change or 15 000 km
(9,000 mi), whichever occurs first. TOP TIER
Detergent Petrol and ACDelco Fuel System
Treatment Plus-Petrol 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 retailer for the
GM-approved additive available in your
country.

Fuel for Diesel Engines

The selection of a high-quality fuel is
important for maintaining optimum vehicle
performance. Diesel fuel should meet or
exceed the minimum requirements in the
most current versions of the local fuel
standards.
Do not use fuel with more than 15 ppm
sulphur. If available, use of diesel fuel with
less sulphur is highly recommended for
better emissions. In countries where 15 ppm
or lower sulphur is not available, do not use
diesel fuel with sulphur greater than 50
ppm. In these countries only, the vehicle is
already designed to accommodate this level
of sulphur.
Caution
Use of fuel that does not comply with
the required technical standards may lead
to engine power loss, increased wear,
or engine damage and may void your
warranty.
Some improper fuels are:
Diesel fuel with the addition of petrol.
Diesel fuel mixed with engine oil or
automatic gearbox fluid.
(Continued)