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SEBU8430-02
NOTICE
Use Only Approved SCAs. Conventional coolants
require the maintenance addition of SCA throughout
their expected life. Do NOT use an SCA with a cool-
ant unless specifically approved by the coolant sup-
plier for use with their coolant. It is the responsibility
of the coolant manufacturer to ensure compatibility
and acceptable performance.
Failure to follow the recommendations can result in
shortened cooling system component life.
The provided requirements are applicable to finished
coolants and not for the concentrates. When
concentrated coolant/antifreeze is mixed, Perkins
recommends mixing the concentrate with distilled
water or with deionized water. If distilled water or
deionized water is not available, water which has the
required properties may be used. For the water
properties, refer to this Operation and Maintenance
Manual for more information.
Coolant/antifreezes for heavy-duty applications that
meet "ASTM D6210" do not require treatment with
SCA at the initial fill. Use the recommended 1:1 or
higher concentration with recommended water.
Treatment with SCA is required on a maintenance
basis.
Coolant/antifreezes for heavy-duty applications that
meet "ASTM D4985" do not require treatment with
SCA at the initial fill. Use the recommended 1:1 or
higher concentration with recommended water.
Treatment with SCA is required on a maintenance
basis.
The SCA manufacturer is responsible for ensuring
the SCA is compatible with water meeting the
"Perkins Minimum Acceptable Water Requirements"
as found in this Operation and Maintenance Manual,
and "ASTM D6210-08". The coolant manufacturer
and the SCA manufacturer are responsible to ensure
that the products will not cause cooling system harm.
NOTICE
Do not mix types and specifications of coolant.
Do not mix types and specifications of SCAs.
Do not mix SCAs and Extenders.
Only use SCAs or Extender approved by coolant
manufacturer and are compatible with the coolant
type used.
If using non Perkins coolants, refer to the coolant
manufacturer for information on a compatible SCA.
Check the antifreeze (glycol concentration) to ensure
adequate protection against boiling or freezing.
Perkins recommends the use of a refractometer for
checking the glycol concentration. Do not use a
hydrometer.
Perkins engine cooling systems should be tested at
500-hour intervals for the concentration of SCA.
Additions of SCA are based on the results of the test.
SCA that is liquid may be needed at 500-hour
intervals.
Adding the SCA to Heavy-Duty Coolant
at the Initial Fill
Commercial heavy-duty antifreeze that meets "ASTM
D4985" specifications MAY require an addition of
SCA at the initial fill. Read the label or the
instructions that are provided by the OEM of the
product.
Use the equation that is in Table 10 to determine the
amount of SCA that is required when the cooling
system is initially filled.
Table 10
Equation For Adding The SCA To The Heavy-Duty Coolant At
The Initial Fill
V × 0.07 = X
V is the total volume of the cooling system.
X is the amount of SCA that is required.
Table 11 is an example for using the equation that is
in Table 10 .
Table 11
Example Of The Equation For Adding The SCA To The Heavy-
Duty Coolant At The Initial Fill
Total Volume of the
Multiplication
Cooling System (V)
Factor
15 L (4 US gal)
× 0.07
Adding The SCA to The Heavy-Duty
Coolant For Maintenance
Heavy-duty antifreezes of all types REQUIRE
periodic additions of SCA.
Test the antifreeze periodically for the concentration
of SCA. For the interval, refer to the Operation and
Maintenance Manual, "Maintenance Interval
Schedule" (Maintenance Section). Test the
concentration of SCA.
Additions of SCA are based on the results of the test.
The size of the cooling system determines the
amount of SCA that is needed.
Use the equation that is in Table 12 to determine the
amount of SCA that is required, if necessary:
Table 12
Equation For Adding The SCA To The Heavy-Duty Coolant
For Maintenance
V × 0.023 = X
V is the total volume of the cooling system.
X is the amount of SCA that is required.
43
Maintenance Section
Coolant Specifications
Amount of SCA
that is Required
(X)
1.05 L (35.5 oz)
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