Cadillac XT4 Owner Manual (GMNA-Localizing-Europe-16412942) - 2023 -
CRC - 5/25/22
188
Driving and Operating
AdBlue
{
Warning
Avoid getting AdBlue (also referred to as
Diesel Exhaust Fluid or DEF) on your skin
or in your eyes as it could cause
irritation. For more safety, handling, and
storage information, see the AdBlue
container label.
Caution
Use only AdBlue that is GM approved,
or fluid containing the API certified or ISO
22241 label. The use of other fluids could
damage the system, requiring costly
repairs that will not be covered by the
vehicle warranty.
Caution
Do not mix fuel with AdBlue, and do not
fill AdBlue into the fuel tank. This could
lead to costly repairs that might not be
covered by the vehicle warranty.
AdBlue is used with diesel engines to reduce
the amount of regulated emissions
produced. The fluid level in the AdBlue tank
must be maintained for the vehicle to run
properly. AdBlue is not a fuel additive.
AdBlue freezes when exposed to
temperatures below
−
11 °C (12 °F). For
AdBlue tank capacity, see
.
It is normal to hear the AdBlue system
purge fluid back into the tank after the
vehicle is shut off.
Locating AdBlue
AdBlue can be purchased at your authorised
retailers. Additionally, some diesel truck
filling stations or retailers may have AdBlue
available for purchase. See
Filling the AdBlue Tank
The blue AdBlue cap is behind the fuel/
AdBlue hatch. If equipped with a fuel cap,
do not remove the fuel and AdBlue caps at
the same time. Fill diesel fuel and AdBlue
independently. Turn the AdBlue cap
anticlockwise to remove.
In cold conditions, AdBlue can freeze in the
AdBlue filler pipe opening. If this prevents
the filling of the AdBlue tank, park the
vehicle in a warm garage overnight.