GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12146071) - 2019 - crc - 7/27/18
262 Driving and Operating
Fuel Additives (Diesel)
TOP TIER Detergent Diesel is
highly recommended for use with
your vehicle. If your area does not
have TOP TIER Detergent 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.
If low-quality diesel is used for
refueling, GM recommends adding
ACDelco Fuel System Treatment
Plus-Diesel to help clean engine
deposits. This is available only at
your GM dealer.
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 sulfur.Do not use a diesel blend containing
more than 20% biodiesel by volume.
Caution
Use of fuel that does not comply
with the required technical
standards can 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 gasoline.
. Diesel fuel mixed with
engine oil or automatic
transmission 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.
(Continued)
Caution (Continued)
.Diesel-water emulsions,
such as Aquazole.
. Aftermarket diesel fuel
additives, which contain
alcohols, organo-metallic
additives, or water
emulsifiers.
Caution
If the vehicle is accidentally
refueled with gasoline, 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 gasoline removed from
the tank and fuel system. Refuel
with Ultra Low Sulfur Diesel fuel.
It is also recommended to have
the fuel system flushed with Ultra
Low Sulfur Diesel, to ensure all
gasoline is removed.
