Perkins 1204EA-E44TA Operation And Maintenance Manual page 70

70
Maintenance Section
Fluid Recommendations
• ASTM American Society for Testing and
Materials
ELC - extended life coolant. A coolant that relies on
organic inhibitors for corrosion and cavitation
protection. Also called OAT coolant (Organic Acid
Technology).
SCA - supplemental coolant additive, concentrated
inorganic inhibitor package.
Extender - concentrated organic inhibitor package.
Conventional Coolant - a coolant that relies on
inorganic inhibitors for corrosion and cavitation
protection.
Hybrid Coolant - a coolant in which the corrosion and
cavitation protection is based on a mixture of organic
and inorganic inhibitors.
The following coolants are recommended for used in
Perkins diesel engines:
Preferred – Perkins ELC
Acceptable – A commercial heavy-duty antifreeze
that meets "ASTM D6210" or "ASTM D4985"
specifications.
NOTICE
The Perkins industrial engines with a NOx reduc-
tion system must be operated with a minimum
30% volume glycol-water mixture, Perkins recom-
mends 50% volume glycol-water mixture of water
and glycol. The 50% concentration allows the
NOx reduction system to operate correctly at
high ambient temperatures.
NOTICE
Do not use a commercial coolant/antifreeze that only
meets the ASTM D3306 specification. This type of
coolant/antifreeze is made for light automotive
applications.
NOTICE
A commercial heavy-duty antifreeze that meets
"ASTM D4985" specification requires a treatment
with an SCA at the initial fill. Read the label or the in-
structions that are provided by the manufacturer of
the product.
NOTICE
A commercial heavy-duty antifreeze that meets either
"ASTM D4985" or "ASTM D6210" specification re-
quires the SCA concentration to be checked at 500-
hour service intervals.
Perkins recommends a 50% mixture of water and
glycol. This mixture of water and glycol will provide
optimum heavy-duty performance as an antifreeze.
This ratio may be changed to 40% water to 60%
glycol if extra freezing protection is required.
A mixture of SCA inhibitor and water is acceptable
but will not give as much corrosion, boiling and,
freezing protection as ELC. Perkins recommends a 6
percent to 8 percent concentration of SCA in those
cooling systems. Distilled water or deionized water is
preferred.
Table 12
Coolant Service Life
Coolant Type
Perkins ELC
Commercial Heavy-Duty Anti-
freeze that meets "ASTM
D6210"
Commercial SCA inhibitor and
Water
(1) Use the interval that occurs first. The cooling system must also
be flushed out at this time.
Perkins ELC
Perkins provides ELC for use in the following
applications:
• Heavy-duty spark ignited gas engines
• Heavy-duty diesel engines
• Automotive applications
The anti-corrosion package for ELC is different from
the anti-corrosion package for other coolants. ELC is
an ethylene glycol base coolant. However, ELC
contains organic corrosion inhibitors and antifoam
agents with low amounts of nitrite. Perkins ELC has
been formulated with the correct amount of these
additives to provide superior corrosion protection for
all metals in engine cooling systems.
ELC is available in a premixed cooling solution with
distilled water. ELC is a 50 percent by volume of
glycol mixture. The Premixed ELC provides freeze
protection to −36 °C (−33 °F). The Premixed ELC is
recommended for the initial fill of the cooling system.
The Premixed ELC is also recommended for topping
off the cooling system.
M0135751
Service Life (1)
6,000 Service Hours or Three
Years
3000 Service Hours or Two Year
3000 Service Hours or One Year