SEBU8121 49
Maintenance Section
Refill Capacities
ELC Cool ing System Maintenance
Correct additions to th e 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 re
commendations can reduce cooling sys-
tem components life unless appropriate corrective ac-
tion is performed.
In order to maintain the correct balance between
the antifreeze and the additives, you must maintain
the recommended concentration of Extended Life
Coolant (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,
from cavitation, from erosion, and from deposits.
NOTICE
Do not use a conventional coolant to top-off a cooling
system tha
t is filled with Extended Life Coolant (ELC).
Do not use standard supplemental coolant additive
(SCA). Onl
y use ELC Extender in cooling systems that
are filled with ELC.
Perkins ELC Extender
ELC Extender is added to the cooling system halfway
through the ELC service life. Treat the cooling system
with ELC E
xtender at 6000 hours or three years. Use
Table 14 in order to determine the correct amount of
ELC Extender that is required.
Containers of several sizes are available. Consult
your Perkins dealer or your Perkins distributor for the
part numb
ers.
Use the formula in Table 14 to determine the correct
amount o
f ELC Extender for your cooling system.
Refer to Operation and Maintenance Manual, “Refill
Capacities” in order to determine the capacity of the
cooling
system.
Table 1 4
Formula For Adding ELC Extender To ELC
V×0.02=X
V is the total capacity of the cooling system.
X is the amount of ELC Extender that is required.
Table15isanex
ample for using the formula that is
in Table 14.
Table 15
Example Of The Equation For Adding ELC
Extender To ELC
Total Volume
of the Cooling
System (V)
Multiplication
Factor
Amount of ELC
Extender that is
Required (X)
9L(2.4USgal) ×0.02
0.18 L
(0.05 US gal)
or (6 fl oz)
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.
Changing to Perkins ELC
To change from heavy-duty coolant/antifreeze to the
Perkins ELC, perform the following steps:
NOTICE
Care must be taken to ensure that all fluids are
contained during performance of inspection, main-
tenance, testing, adjusting and the repair of the
product. Be prepared to collect the fluid with suitable
containers before opening any compartment or dis-
assembling any component containing fluids.
Dispose of all fluids according to local regulations and
mandates.
1. Drain the coolant into a suitable container.
2. Dispose of the coolant according to local
regulations.
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