TORQUE CONVERTER GP 1T1787 - Caterpillar

Proper Additions to the Extended Life Coolant
Use only Caterpillar products or commercial products that have passed Caterpillar's EC-1 specification for pre-mixed or concentrated coolants. Use only Caterpillar Extender with Extended Life Coolant. Mixing Extended Life Coolant with other products reduces the Extended Life Coolant service life. Failure to follow the recommendations can reduce cooling system components life unless appropriate corrective action 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.
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). Only use ELC Extender in cooling systems that are filled with ELC.
During daily maintenance, use the premixed ELC as a cooling system top-off. This will bring the coolant up to the proper level. Use ELC or use a coolant that meets the Caterpillar EC-1 specification. Before the engine is exposed to freezing temperatures, check the freeze protection (glycol concentration) of the coolant with the 1U-7298 Coolant/Battery Tester (Celsius) or with the 1U-7297 Coolant/Battery Tester (Fahrenheit). Use ELC Concentrate to adjust the glycol concentration, if necessary. ELC Concentrate can be used to lower the freezing point to −51 °C (−60 °F).Caterpillar ELC Extender
Caterpillar ELC Extender is added to the cooling system halfway through the ELC service life. Treat the cooling system with ELC Extender at three years or one half of the coolant service life. Refer to the specific engine's Operation and Maintenance Manual, "Maintenance Interval Schedule" (Maintenance Section).Containers of several sizes are available. Consult your Caterpillar dealer for the part numbers.Adding ELC Extender
The amount of ELC Extender that is required depends on the capacity of the cooling system. Use the equation that is in Table 1 in order to determine the proper amount of ELC Extender that is required.
Table 1
Equation For Adding ELC Extender To ELC
V × 0.02 = X
V is the total volume of the cooling system.
X is the amount of ELC Extender that is required. Table 2 is an example for using the equation that is in Table 1.
Table 2
Example Of The Equation For Adding ELC Extender To ELC
Total Volume of the Cooling System (V) Factor for Multiplication Amount of ELC Extender that is Required (X)
946 L
(250 US gal) × 0.02 19 L
(5 US gal) 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.The ELC can be recycled. The drained coolant mixture can be distilled. The distillation process can remove the ethylene glycol and the water. Consult your Caterpillar