SEBU8191-01 37
Maintenance Section
Refill Capacities
Engines that ar
e 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 (10
9.4 °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 16
Coolant Service Life
Coolant Type Service Life
Perkins ELC
6,000 Service Hours or
Three Years
Commercia
lHeavy-Duty
Coolant that meets
“ASTM D6210”
3000 Service Hours or
Two Y ears
Commercial SCA and
Water
3000 Service Hours or
Two Y ears
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 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 recommended for
topping off the cooling system.
Containers of several sizes are available. Consult
your Perkins dealer or your Perkins distributor for the
part numbers.
ELC Cooling System Maintenance
Correct additions to the Extended Life
Coolant
NOTICE
Use only Perkins products for pre-mixed or concen-
trated coolants.
Use only Perkins Extender with Extended Life
Coolant.
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 order to maintain the correct balance between
the coolant and the additives, you must maintain
the recommended concentration of Extended Life
Coolant (ELC). Lowering the proportion of coolant
lowers the proportion of additive. This will lower the
ability of the coolant to protect the system from pitting,
from cavitation, from erosion, and from deposits.
NOTICE
Do not use a conventional coolant to top-off a cooling
syste
mthatisfilled with Extended Life Coolant (ELC).
Do not use standard supplemental coolant additive
(SCA)
. Only use ELC Extender in cooling systems that
are filled with ELC.
NOTICE
When using Perkins ELC, do not use standard SCA's
or SCA filters.
ELC Cooling System Cleaning
Note: If the cooling system is already using ELC,
cleaning agents are not required to be used at
the specified coolant change interval. Cleaning
agents are only required if the system has been
contaminated by the addition of some other type of
coolant or by cooling system damage.
Clean water is the only cleaning agent that is required
when ELC is drained from the cooling system.
After the cooling system is drained and after the
cooling system is refilled, operate the engine while
the cooling system filler cap is removed. Operate
the engine until the coolant level reaches the normal
operating temperature and until the coolant level
stabilizes. As needed, add the coolant mixture in
order to fill the system to the specified level.
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