Cadillac XT4 Owner Manual (GMNA-Localizing-Europe-16412942) - 2023 -
CRC - 5/25/22
Driving and Operating
235
Caution (Continued)
.
Triglyceride fuels, such as raw
vegetable oil or animal fat, in any
form, including with blends of diesel
or biodiesel.
.
Marine diesel fuel and fuel oils.
.
Diesel-water emulsions, such as
Aquazole.
.
Aftermarket diesel fuel additives,
which contain alcohol, organo-metallic
additives, or water emulsifiers.
Caution
If the vehicle is accidentally refuelled
with petrol, do not continue driving the
vehicle. Driving the vehicle will damage
the fuel system. Have the vehicle towed
to a qualified technician to have the
petrol removed from the tank and fuel
system. Refuel with Ultra Low Sulphur
Diesel fuel. It is also recommended to
have the fuel system flushed with Ultra
Low Sulphur Diesel, to ensure all petrol is
removed.
Some conditions, such as dirty fuel, may
decrease fuel filter life and a CHANGE FUEL
FILTER message may come on in the Driver
Information Centre (DIC).
Climate Grade Diesel Fuels
At temperatures below 0 °C (32 °F), avoid
using biodiesel blends above 7% by volume.
Using such a fuel may cause fuel filter
plugging, system gelling, and freezing, which
may adversely affect vehicle starting.
Severe winter grade diesel fuel, such as 1-D
diesel fuel or Arctic grade diesel fuel, can be
used in extreme cold temperatures (below
−
18 °C or 0 °F); however, doing so will
reduce power and fuel economy. Avoid
using severe winter grade fuel in warm or
hot climates. It may result in stalling, poor
starting, and damage to the fuel injection
system.
Fuels improperly blended for cold
temperature operation may result in
restricted fuel filters. The vehicle is equipped
with a fuel heating system to prevent
gelling or waxing of conventional diesel fuel
and biodiesel blends, but may not prevent
all cases.
In the event of severe winter conditions, the
fuel filter may become clogged by wax
naturally present in the fuel. To unclog it,
move the vehicle to a warm garage area
and allow the filter to warm up. The fuel
filter may need to be replaced. See
.
Biodiesel
Biodiesel is a renewable fuel produced from
vegetable oils or animal fats that have been
chemically modified to make it compatible
with diesel fuel.
Caution
Do not use homemade biodiesel or home
test kits because the quality cannot be
verified by approved scientific methods.
Do not use raw vegetable oil or other
unmodified bio-oils, fats, or blends of
vegetable oil with diesel. They could
damage the fuel system and engine, and
damage would not be covered by the
vehicle warranty.