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SEBU8430-02
ELC Cooling System Contamination
NOTICE
Mixing ELC with other products reduces the effective-
ness of the ELC and shortens the ELC service life.
Failure to follow these recommendations can result in
shortened cooling system component life.
Do not mix types and specifications of coolant.
Do not mix types and specifications of SCAs.
ELC cooling systems can withstand contamination to
a maximum of 10 percent of conventional heavy-duty
antifreeze or SCA. If the contamination exceeds 10
percent of the total system capacity, perform ONE of
the following procedures:
• Drain the cooling system into a suitable container.
Dispose of the coolant according to local
regulations. Flush the system with a 5 to 10
percent solution of Perkins ELC. Fill the system
with the Perkins ELC.
• Drain a portion of the cooling system into a
suitable container according to local regulations.
Then, fill the cooling system with premixed ELC.
This procedure should lower the contamination to
less than 10 percent.
• Maintain the system as a conventional Heavy-
Duty Coolant. Treat the system with an SCA.
Change the coolant at the interval that is
recommended for the conventional Heavy-Duty
Coolant.
Extended Life Inhibitor (ELI)
NOTICE
Do NOT use commercial SCA/ELI with Perkins ELI.
Mixing Perkins ELI with commercial coolants and/or
commercial SCA reduces the Perkins ELI service life.
Do NOT mix brands or types of coolant. Do NOT mix
brands or types of SCA and/or brands or types of in-
hibitors. Different brands or types may use different
additive packages to meet the cooling system re-
quirements. Different brands or types may not be
compatible.
Failure to follow the recommendations can reduce
cooling system component life, unless appropriate
corrective action is performed.
Perkins Extended Life Inhibitor (ELI) is water-based
coolant that does not contain glycol. Perkins ELI is for
applications that do not require freeze protection.
Exceptions are listed here. Failure to follow these
recommendations can or will result in failures.
Perkins ELI is a corrosion inhibitor concentrate that is
mixed to approximately 7.5 % by volume with water.
Perkins ELI has the following characteristics:
• Based on the same organic additive technology
that is used in Perkins Extended Life Coolant
(ELC)
• Does not contain glycol. Designed for use in
applications that do not require freeze protection.
• Provides superior corrosion and cavitation
protection compared to SCA mixed with water.
• Provides an extended drain interval of up to 3
years or 6,000 hours. The drain interval may be
longer as determined by using coolant sample
analysis program.
• Requires little maintenance compared to
conventional SCA mixed with water.
In engine applications that do not require freeze
protection,Perkins ELI can replace SCA/Water
coolant
Additional information is available from your Perkins
distributor. Refer to table 9 for information about
Perkins ELI.
41
Maintenance Section
Coolant Specifications
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