WARNING
l
Do not open the radiator cap while the en-
gine is hot.
The coolant system is under pressure and
any hot coolant escaping could cause se-
vere burns.
Vehicles with turbocharger
If the level should drop below the “L” (LOW) level
on the dipstick, add coolant to the reserve tank.
Also, if the reserve tank is completely empty, re-
move the radiator cap (A) and add coolant until the
level reaches the filler neck.
WARNING
l
Do not open the radiator cap while the en-
gine is hot.
The coolant system is under pressure and
any hot coolant escaping could cause se-
vere burns.
Anti-freeze
The engine coolant contains an ethylene glycol anti-
corrosion agent. The cylinder head and water pump
housing are cast aluminium alloy, and periodic
changing of the engine coolant is necessary to pre-
vent corrosion of these parts.
Use High-quality ethylene glycol based coolant. It
has excellent protection against corrosion and rust
formation of all metals including aluminium and
can avoid blockages in the radiator, heater, cylin-
der head, engine block, etc.
Because of the necessity of this anti-corrosion
agent, the coolant must not be replaced with plain
water even in summer. The required concentration
of anti-freeze differs depending on the expected am-
bient temperature.
Ambient temperature
(minimum) °C
-30 -35 -50
Anti-freeze concentra-
tion %
45 50 60
CAUTION
l
Do not use alcohol or methanol anti-
freeze or any engine coolants mixed with
alcohol or methanol anti-freeze. The use
of an improper anti-freeze can cause cor-
rosion of the aluminium components.
l
For effective anti-corrosion and anti-
freeze performance, keep the anti-freeze
concentration within the range of 45 to
60 %.
Concentrations exceeding 60 % will re-
sult in a reduction of both the anti-freeze
and cooling performance thus adversely
affecting the engine.
l
Do not top up with water only.
Water by itself reduces the rust-protec-
tive and anti-freeze qualities of the cool-
ant and has a lower boiling point. It can
also cause damage to the cooling system if
it should freeze. Do not use tapwater, as it
can cause corrosion and rust formation.
During cold weather
If the temperatures in your area drop below freez-
ing, there is the danger that the coolant in the en-
gine or radiator could freeze and cause severe dam-
age to the engine and/or radiator.
Add a sufficient amount of anti-freeze to the cool-
ant to prevent it from freezing.
The concentration should be checked before the
start of cold weather and anti-freeze added to the
system if necessary.
Maintenance
8-08
8
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