SEBU8325-01 39
Maintenance Section
Refill Capacities
NOTICE
Do not use a com
mercial coolant/antifreeze that on-
ly meets the ASTM D3306 specification. This type of
coolant/antifreeze is made for light automotive appli-
cations.
Perkins recommends a 1:1 mixture of water and
glycol. This mixture of water and g lycol will provide
optimum hea
vy-duty performance as an antifreeze.
Thisratiomaybeincreasedto1:2watertoglycolif
extra freezing protection is required.
Note: A commercial heavy-duty antifreeze that
meets “ASTM D4985” specifications MAY require a
treatment
with an SCA at the initial fill. Read the label
or the instructions that are provided by the OEM of
the product.
In stationary engine applications and marine engine
applications that do not require anti-boil protection
or freeze
protection, a mixture of SCA and water
is acceptable. Perkins recommends a 6 percent to
8 percent concentration of SCA in those cooling
systems
. Distilled water or deionized water is
preferred. Water which has the recommended
properties may be used.
Engines that are operating in an ambient temperature
above 43 °C (109.4 °F) must use SCA and water.
Engine
s that operate in an ambient temperature
above 43 °C (109.4 °F) and below 0 °C (32 °F) due
to seasonal variations consult your Perkins dealer
or your
Perkins distributor for the correct level of
protection.
Table 10
Coolant Service Life
Coolant Type Service Life
Perkins ELC
6,000 Service Hours or
Three Years
Commercial Heavy-Duty
Ant
ifreeze that meets
“ASTM D4985”
3000 Service Hours or
Two Years
Perkins POWERPART
SCA
3000 Service Hours or
Two Years
Commercial SCA and
Water
3000 Service Hours or
Two Years
Extended Life Coolant (ELC)
Perkins provides Extended Life Coolant (ELC) for
use in the following applications:
•
Heavy-duty spark ignited gas engines
•
Heavy-duty diesel engines
•
Automotive app
lications
The anti-corrosion package for ELC is different from
the anti-corr
osion package for other coolants. ELC
is an ethylene glycol base coolant. However, ELC
contains organic corrosion inhibitors and antifoam
agents with l
ow amounts of nitrite. Perkins ELC
has been formulated with the correct amount of
these additives in order to provide superior corrosion
protection
for all metals in engine cooling systems.
ELC is available in a 1:1 premixed cooling solution
with distil
led water. The Premixed ELC provides
freeze protection to −36 °C (−33 °F). The Premixed
ELC is recommended for the initial fill of the cooling
system . Th
e Premixed ELC is also recommended for
topping off the cooling system.
ELC Concen
trate is also available. ELC Concentrate
canbeusedtolowerthefreezingpointto−51 °C
(−60 °F) for arctic conditions.
Containers of several sizes are available. Consult
your Perkins dealer or your Perkins distributor for the
part numb
ers.
ELC Cool
ing System Maintenance
Correct additions to the Ext ended Life
Coolant
NOTICE
Use only Perkins products for pre-mixed or concen-
trated coolants.
Mixing Extended Life Coolant with other products re-
duces the Extended Life Coolant service life. Failure to
follow the recommendations can reduce cooling sys-
tem components life unless appropriate corrective ac-
tion is performed.
In or
der to maintain the correct balance between
the antifreeze and the additives, you must maintain
the recommended concentration of Extended Life
Coo
lant (ELC). Lowering the proportion of antifreeze
lowers the proportion of additive. This will lower the
ability of the coolant to protect the system from pitting,
fro
m cavitation, from erosion, and from deposits.
NOTICE
Do not use a conventional coolant to top-off a cooling
system that is filled with Extended Life Coolant (ELC).
Do not use standard supplemental coolant additive
(SCA).
When using Perkins ELC, do not use standard SCA's
or SCA filters.
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