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1F-1 Engine Cooling System:
Engine Cooling System
Engine
Cooling System Description
The cooling system consists of the radiator cap, radiator, coolant reservoir, hoses, water pump, cooling fan and
thermostat. The radiator is of tube-and-fin type.
Coolant Description
WARNING
!
• Do not remove radiator cap to check engine coolant level; check coolant visually at the see-through
coolant reservoir. Coolant should be added only to reservoir as necessary.
• As long as there is pressure in the cooling system, the temperature can be considerably higher than
the boiling temperature of the solution in the radiator without causing the solution to boil. Removal
of the radiator cap while engine is hot and pressure is high will cause the solution to boil
instantaneously and possibly with explosive force, spewing the solution over engine, fenders and
person removing cap. If the solution contains flammable anti-freeze such as alcohol (not
recommended for use at any time), there is also the possibility of causing a serious fire.
• Check to make sure that engine coolant temperature is cold before removing any part of cooling
system.
• Also be sure to disconnect negative cable from battery terminal before removing any part.
The coolant recovery system is standard. The coolant in the radiator expands with heat, and the coolant is overflowed
to the reservoir.
When the system cools down, the coolant is drawn back into the radiator.
The cooling system has been filled with a quality coolant that is a 50/50 mixture of water and ethylene glycol
antifreeze.
This 50/50 mixture coolant solution provides freezing protection to –36 °C (–33 °F).
• Maintain cooling system freeze protection at –36 °C (–33 °F) to ensure protection against corrosion and loss of
coolant from boiling. This should be done even if freezing temperatures are not expected.
• Add ethylene glycol base coolant when coolant has to be added because of coolant loss or to provide added
protection against freezing at temperature lower than –36 °C (–33 °F).
NOTE
• Alcohol or methanol base coolant or plain water alone should not be used in cooling system at any
time as damage to cooling system could occur.
• Coolant must be mixed with deminerated water or distilled water.
Anti-freeze proportioning table
Freezing temperature
Anti-freeze / Anti-corrosion coolant concentration
Ratio of compound to cooling water
General Description
°C
°F
%
ltr.
US pt.
Imp pt.
For M/T model
–36
–33
50
3.10/3.10
6.55/6.55
5.46/5.46
S7RS0B1601001
S7RS0B1601002
For A/T model
–36
–33
50
3.05/3.05
6.44/6.44
5.37/5.37
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