Engine Coolant - Suzuki drz 400E Service Manual

5-4 COOLING SYSTEM

ENGINE COOLANT

At the time of manufacture, the cooling system is filled with a
50:50 mixture of distilled water and ethylene glycol antifreeze.
This mixture will provide optimum corrosion and heat protec-
tion, and will protect the cooling system from freezing at above
–31°C (–24°F).
If the motorcycle is to be exposed to temperatures below –31°C
(–24°F), the percentage of antifreeze should be increased to
55% or 60%, according to figure 2.
The characteristics of different antifreeze vary; therefore, be
sure to use the specified antifreeze.
Engine coolant: Mix antifreeze designed for alumi-
Water/antifreeze mixture ratio: 50:50 – 40:60
Mix a high quality ethylene glycol based antifreeze
with distilled water only. Do not mix an alcohol based
antifreeze or different brands of antifreeze.
The percentage of antifreeze in the coolant should
be between 50 to 60%. If the percentage of antifreeze
is above or below this range the coolant's frost pro-
tection and rust-inhibiting capabilities will be re-
duced. Always keep the antifreeze content above
50% even if the atmospheric temperature does not
go below the freezing point.
Engine coolant capacity: 1 250 ml (1.3 US qt, 1.1 Imp qt)
Antifreeze density
50%
55%
60%
Do not open the radiator cap when the engine is hot,
as you may be injured by escaping hot liquid or va-
por.
The engine must be cool before servicing the cool-
ing system.
Engine coolant may be harmful if swallowed or if it
comes in contact with the skin or eyes. If engine cool-
ant gets into the eyes or contacts the skin, flush the
eyes or wash the skin thoroughly, with plenty of wa-
ter. If engine coolant is swallowed, induce vomiting
and call a physician immediately.
num radiators with distilled water
only.
Freezing point
–31°C (–24°F)
–40°C (–40°F)
–55°C (–67°F)