Scania DC09 - Cooling System; Coolant Recommendations and Properties

Cooling system
OPM 100 en-GB 67
© Scania CV AB 2023, Sweden
Cooling system
Coolant
Note:
The coolant should be changed when the cooling
system is cleaned: every 6,000 hours or at least
every 5 years. See Changing the coolant and
cleaning the cooling system.
The coolant recommended by Scania is a mix-
ture of water with antifreeze (ethylene glycol)
and corrosion protection. The coolant has several
properties which are important for the function
of the cooling system:
• Corrosion protection
• Antifreeze
• Increases the boiling point
The coolant should always contain 35-55 per
cent by volume of antifreeze and corrosion pro-
tection so that the coolant properties ensure that
the coolant works correctly.
Note:
Too high a dose of antifreeze and corrosion pro-
tection will increase the amount of sludge and
blockages accumulating in the radiator. Too low
a concentration can lead to corrosion of the cool-
ing system and ice formation at low tempera-
tures.
Hot climates
In order to retain the corrosion protection and the
higher boiling point, it is essential to use coolant
consisting of water mixed with antifreeze and
corrosion protection (ethylene glycol). This also
applies in countries where the temperature never
drops below 0°C (32°F).
Antifreeze and corrosion protection
The antifreeze and corrosion protection used in
Scania engines should be of the antifreeze (eth-
ylene glycol) and corrosion protection type.
Only the product Scania coolant, or other prod-
ucts tested as antifreeze and corrosion protection
for Scania, may be used in Scania engines. Prod-
ucts that do not satisfy the requirements for use
in a Scania engine may result in faults in and
damage to the cooling system. This may lead to
the invalidation of Scania’s warranty for faults