BOLT 4852850 - Caterpillar

Follow the guidelines for antifreeze/coolant mixtures that are recommended in this Operation and Maintenance Manual, "Refill Capacities and Recommendations" topic. Failure to do so can cause engine damage.
Allow the engine to cool. Check the coolant level.
Loosen the cooling system filler cap slowly in order to relieve any pressure. Remove the cooling system filler cap.
If freezing temperatures are expected, check the coolant for protection against freezing. The cooling system must be protected against freezing to the lowest expected outside temperature. Add the proper coolant/water mixture, if necessary.
Perform all required periodic maintenance on all driven equipment. Refer to the instructions that are provided by the OEM of the driven equipment.