Maintenance and Adjustment
94
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.
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.