48 SEBU8121
Maintenance Section
Refill Capacities
Table 1 2
Propylene Glycol
Concentration
Freeze
Protection
Anti-Boil
Protection
50 Percent
−29 °C (−20 °F) 106°C(223°F)
To c
heck the concentration of glycol in the coolant,
measure the specific gravity of the coolant.
Co
olant Recommendations
The following two coolants are used in Perkins diesel
en
gines:
Preferred – Perkins Extended Life Coolant (ELC)
Acceptable – A commercial heavy-duty
coolant/antifreeze that meets “ASTM D4985”
sp
ecifications
NOTICE
Do not use a commercial 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 glycol will
provide optimum heavy-duty performance as a
coolant/antifreeze. This ratio may be increased to 1:2
water to glycol if extra freezing protection is required.
Note: A commercial heavy-duty coolant/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 six percent
to eight 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.
Engines 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 13
Coolant Service Life
Coolant Type Service Life
Perkins ELC
12,000 Service Hours
or Six Years
Commercial Heavy-Duty
Coolant/Antifreeze 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 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 in order to provide superior corrosion
protection for all metals in engine cooling systems.
ELC extends the service life of the coolant to 12000
service hours or six years. ELC does not require
a frequent addition of a Supplemental Coolant
Additive (SCA). An Extender is the only additional
maintenance that is needed at 6000 service hours or
one half of the ELC service life.
ELC is available in a 1:1 premixed cooling solution
with distilled 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. The Premixed ELC is also recomme nded for
topping off the cooling system.
ELC Concentrate 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 numbers.
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