Test the antifreeze periodically for the concentration
of SCA. For the interval, refer to the Operation and
Maintenance Manual, “Maintenance Interval
Schedule” (Maintenance Section). Cooling System
Supplemental Coolant Additive (SCA) Test/Add.
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 14 to determine the
amount of SCA that is required, if necessary:
Table 14
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.
Table 15 is an example for using the equation that is
in Table 14 .
Table 15
Example Of The Equation For Adding The SCA To The Heavy-
Duty Coolant For Maintenance
Total Volume of the
Cooling System (V)
Multiplication
Factor
Amount of SCA
that is Required
(X)
15 L (4 US gal)
× 0.023
0.35 L (11.7 oz)
Cleaning the System of Heavy-Duty
Antifreeze
Note:
Before corrosion inhibitors can be effective the
cooling system must be free from rust, scale and
deposits.
• Drain the cooling system.
• Before filling the cooling system with acceptable
quality water, pre-dissolve the cleaning agent in
the water. Use a non-foaming detergent to clean
oil contamination, consult your Perkins dealer for
suitable product.
NOTICE
Most commercial cooling system cleaning agents are
corrosive and their use is not recommended by
Perkins.
The cooling system must be thoroughly flushed with
clean water after using cleaning agents.
Cleaning agents for marine or industrial cooling sys-
tem must not be used, these areveryaggressiveand
can cause damage to cooling system components.
• Run the engine for approximately 30 minutes and
then leave the engine to cool down.
• Take a sample of the solution from the cooling
system, drain the system.
• Allow the sample to sit for at least 30 minutes and
check for signs of oil and deposits. If oil and
deposits are still present repeat the procedure.
• Flush the system with clean water.
• Fill the system with new coolant.
i08273319
Fluid
Recommendations
General
Lubricant
Information
Because
of
government
regulations
regarding
the
certification
of
exhaust
emissions
from
the
engine,
the
lubricant
recommendations
must
be
followed.
• API
American Petroleum Institute
• SAE
Society Of Automotive Engineers Inc.
• ACEA
Association des Constructers
European Automobiles.
• ECF-3
Engine Crankcase Fluid
Licensing
The Engine Oil Licensing and Certification System by
the American Petroleum Institute (API) and the
Association des Constructers European Automobiles
and (ACRA) is recognized by Perkins. For detailed
information about this system, see the latest edition
of the “API publication No. 1509”. Engine oils that
bear the API symbol are authorized by API.
Illustration 61
g06183768
Typical API symbol
M0087475-03
75