150
6.2 Lubricants
Fuel, Lubricants and Coolants
Coolant/Antifreeze
Antifreeze must be used in any
climate for both freeze and boiling
point protection.
It broadens operating temperature
range by lowering coolant freezing
point and by raising its boiling point.
Do not use more than 50 percent
antifreeze in the mixture unless
additional freeze protection is
required. Never use more than 68
percent antifreeze under any
condition.
Use soft water in coolant mixture,
Contaminants in hard water
neutralise the corrosion inhibitor
components. Water must not
exceed 300 ppm hardness or contain
more than 100 ppm of either
chloride or sulphate.
Specifications - Use low silicate
antifreeze which meets ASTM
4985 test (GM6038M spec.)
criteria or class II JIS K 2234
specification.
Use a 50 percent concentration
level upto an ambient
temperature -37
O
C for non-amino
base coolant.
For ambient temperature further low
follow the guidelines below.
Antifreeze at 68 percent
concentration provides maximum
freeze protection and must never be
exceeded under any conditions.
Ethylene Glycol
(Non-Amino base)
50% = -37
O
C
60% = -54
O
C
68% = -71
O
C
Concentration Testing -
Antifreeze concentration must be
checked using a refractometer
(such as Fleetguard Part No.
CC2800)
Windscreen Washer Antifrost
Make
: Antifrost - K
Concentration : 1:5 for 0
O
C
1:1 for -10
O
C
2:1 for -16
O
C
1:0 for -37
O
C
