How Often Should the Engine Coolant Be Replaced?
The best answer to the question of how often engine coolant should be replaced is to find out what the vehicle manufacturer recommends. The vehicles owner’s manual should have a maintenance schedule that shows what mileage intervals the engine coolant should be replaced. If the vehicles owner’s manual is missing, the dealer or the manufacturers website should have the needed information. When replacing engine coolant, it’s best to go over the cooling system check list. Older vehicles usually require that the engine/radiator coolant be replaced every 30,000 miles. Most new vehicles from 2003 and up have a gold coolant (older vehicles green coolant) that should last up to 100,000 miles. The manufacturers maintenance schedule will have the mileage intervals required. It’s important to note that most manufacturers do not recommend a coolant flush but simply recommend replacing the engine coolant. Drain and Refill Radiator Coolant or Cooling System Flush Drain and Refill • With a radiator c
