Cadillac XT5 2017 Owner's Manual page 259

258 VEHICLE CARE
Gives boiling protection up to
129 °C (265 °F), engine
temperature.
Protects against rust and corrosion.
Will not damage aluminum parts.
Helps keep the proper engine
temperature.
Caution
If improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
mixture can freeze and crack engine
cooling parts. The repairs would not
be covered by the vehicle warranty.
Use only the proper mixture of
engine coolant for the cooling
system. See Recommended Fluids
and Lubricants 0 333.
Never dispose of engine coolant by
putting it in the trash, pouring it on
the ground, or pouring into sewers,
streams, or bodies of water. Have the
coolant changed by an authorized
service center, familiar with legal
requirements regarding used coolant
disposal. This will help protect the
environment and your health.
Checking Coolant
The vehicle must be on a level surface
when checking the coolant level.
Check to see if coolant is visible in the
coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down. If coolant is visible but
the coolant level mark is not visible,
add a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant at the coolant surge tank to
the top rib on the middle of the tank,
but be sure the cooling system is cool
before this is done. See Engine
Overheating 0 259.
The coolant surge tank is located in
the engine compartment on the driver
side of the vehicle. See Engine
Compartment Overview 0 251.
How to Add Coolant to the
Surge Tank
Warning
You can be burned if you spill
coolant on hot engine parts. Coolant
contains ethylene glycol and it will
burn if the engine parts are hot
enough. Do not spill coolant on a
hot engine.
Caution
This vehicle has a specific coolant
fill procedure. Failure to follow this
procedure could cause the engine to
overheat and be severely damaged.