Fuel For Diesel Engines - Cadillac XT4 Owner's Manual

264 DRIVING AND OPERATING

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.
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.