GEAR AS 4202042 - Caterpillar

Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loosen cap slowly to relieve the pressure.
Topping off or mixing Cat ELC with other products that do not meet Caterpillar EC-1 specifications reduces the effectiveness of the coolant and shortens coolant service life.Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specification for pre-mixed or concentrate coolants. Use only Extender with Cat ELC.Failure to follow these recommendations can result in shortened cooling system component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
When a Caterpillar Extended Life Coolant (ELC) is used, an Extender must be added to the cooling system.Use a 8T-5296 Coolant Test Kit to check the concentration of the coolant.Reference: For additional information about the addition of Extender, refer to Operation and Maintenance Manual, SEBU6250, "Caterpillar Machine Fluids Recommendations" or consult your Caterpillar dealer.
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Slowly remove the cooling system pressure cap on the left rear side of the machine in order to relieve system pressure.
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If necessary, drain enough coolant from the radiator in order to allow the addition of the Extender to the cooling system. The coolant drain valve can be accessed from the right side of the engine compartment.
Add the Extender to the cooling system. Reference: Refer to Operation and Maintenance Manual, "Capacities (Refill)" for the correct amount.
Check the coolant level. Reference: Refer to Operation and Maintenance Manual, "Cooling System Level - Check" for the correct procedure.
Install the cooling system pressure cap.