Operation 3.5 Cold weather operation 3.5 Cold weather operation 3.5.1 Precautions for low temperature If the temperature becomes low, it becomes difficult to start the engine, and the coolant may freeze, so do as follows. Fuel and lubricants Change to fuel and oil with low viscosity for all components. For details of the specified viscosity, see "Fuel, coolant and lubri- cants (4-11)". Coolant z Antifreeze is toxic. Be careful not to get it into your eyes or on your skin. If it should get into your eyes or on your skin, wash it off with large amount of fresh water and see a doctor at once.
z When changing the coolant or when handling coolant containing antifreeze that has been drained when repair- ing the radiator, please contact your KOMATSU distribu- tor. Antifreeze is toxic, so do not let it flow into drainage ditches or spray it on to the ground surface. z Antifreeze is flammable, so do not bring any flame close. Do not smoke when handling antifreeze. NOTE z Never use methanol, ethanol or propanol based anti- freeze. z Avoid using any leak-preventing agent, regardless if it is sold separately or in antifreeze. z Do not mix one antifreeze with a different brand. For details of the antifreeze mixture when changing the coolant, see "Clean inside of cooling system (4-26)".
Use a Permanent Antifreeze (ethylene glycol mixed with corro- sion inhibitor, antifoam agent, etc.) meeting the standard requirements as shown below. With permanent antifreeze, no change of coolant is required for a year. If it is doubtful that an available antifreeze meets the standard requirements, ask the supplier of that antifreeze for information. Standard requirements for permanent antifreeze z SAE J1034 z FEDERAL STANDARD O-A-548D REMARK In areas where permanent antifreeze is not available, it is possible to use antifreeze whose main component is ethyl- ene glycol and does not contain any corrosion inhibitor.
(Such antifreeze can be used for the winter season only.) However, in such a case, the cooling water must be changed twice a year (spring and fall), so use permanent antifreeze when possible. WA150-5H – VEAM934100 3-105 WARNING WARNING