Isuzu D-MAX 2020 Owner's And Driver's Manual page 723

Checking the Intercooler Coolant Level
Reserve tank
Sub-tank
Sub-tank
Reserve tank cap
Radiator cap
SERVICE AND MAINTENANCE
Front
"MAX" line
"MIN" line
RTUL60SH004201
Sub-tank cap
RTUL60SH019001
RTUL60SH018901
The reserve tank is located at the front right
side of the engine compartment. When the
engine has cooled down, make sure that
the intercooler coolant level in the reserve
tank is between the "MAX" and "MIN" line.
In addition, check that the intercooler
coolant is full to the filler neck of the sub-
tank. Check the intercooler coolant level
only when it is cold.
Engine Hood → Refer to page 6-11
CAUTION
• The sub-tank cap opens and closes
in double action. When removing
the sub-tank cap, take caution not to
damage the cap and the filler neck.
• The pressure resistance of the
radiator cap of the engine cooling
system and the sub-tank cap
of the water-cooled intercooler
system are different. If they are
installed incorrectly, it may lead to
overheating.
NOTE
• The reserve tank also serves as
a tank for the engine coolant that
cools the engine.
Also, check to make sure there are no
leaks from the intercooler, radiator or
radiator hose. Check for fluid or stains on
the ground showing leaks where the vehicle
is parked. Contact your Isuzu Dealer when
you discover leaks.
CAUTION
• Using the vehicle when there are
leaks can lead to engine failure.
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