Cooling systems

Why do vehicles have coolant/antifreeze in the engine?

  • The coolant/antifreeze prevents the cooling system freezing in cold climates
  • It helps raise the temperature at which the coolant in the engine would normally boil
  • It prevents corrosion of internal components in the cooling system

What happens if there is no coolant/antifreeze in the engine?

  • Over a period of time, rust and corrosion will appear in the cooling system. Long term, this will reduce the life of cooling system components such as the radiator, water pump and coolant hoses.
  • In extreme cases, failure of cylinder head gaskets and other engine damage can occur

How do I know if my coolant/antifreeze requires changing?

  • We use chemically treated test strips (similar to the ones used in spa/swimming pools) that change colour depending on the condition of the coolant
  • We also use a refract meter to measure the antifreeze level

How often should the coolant/antifreeze be changed?

  • Most manufacturers recommend a two year interval. Some vehicles now have a long life coolant, which can last for four years
  • When there is visible rust in the cooling system
  • When the cooling system test is low on antifreeze or anti corrosive

How do you change the fluid?

  • We drain and back flush (if necessary) the cooling system, then the cooling system is refilled with fresh coolant (meeting manufacturers specifications and bled. We check the coolant ph and concentrate levels, (adjusting if necessary).
  • During the above process we pressure test the cooling system and test the operation of the radiator cap.