User's Manual

Maintenance and Adjustment
141
Cooling System
To ensure efficient
engine cooling,
check the coolant
level each day
before riding the
motorcycle, and top
up the coolant if
the level is low.
Note:
• A year-round, Hybrid Organic Acid
Technology (known as Hybrid OAT or
HOAT) coolant is installed in the
cooling system when the motorcycle
leaves the factory. It is coloured
green, contains a 50% solution of
ethylene glycol based antifreeze, and
has a freezing point of -35°C (-31°F).
Corrosion Inhibitors
To protect the cooling system from
corrosion, the use of corrosion inhibitor
chemicals in the coolant is essential.
If coolant containing a corrosion
inhibitor is not used, the cooling system
will accumulate rust and scale in the
water jacket and radiator. This will block
the coolant passages, and considerably
reduce the efficiency of the cooling
system.
Note:
• HD4X Hybrid OAT coolant, as
supplied by Triumph, is pre-mixed
and does not need to be diluted prior
to filling or topping up the cooling
system.
Coolant Level Inspection
Note:
• The coolant level should be checked
when the engine is cold (at room or
ambient temperature).
1. Expansion tank
2. MAX mark
3. MIN mark
cbob
Warning
HD4X Hybrid OAT coolant contains
corrosion inhibitors and anti-freeze
suitable for aluminium engines and
radiators. Always use the coolant in
accordance with the instructions of
the manufacturer.
Coolant that contains anti-freeze and
corrosion inhibitors contains toxic
chemicals that are harmful to the
human body. Never swallow
anti-freeze or any of the motorcycle
coolant.
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