How Often Should You Flush Cooling System And Replace Coolant?
How Often Should You Flush Cooling System And Replace Coolant? HOW OFTEN SHOULD YOU FLUSH THE COOLANT? Depending on the vehicle and the coolant, the average time between flushes is two years or 30,000 miles for silicated coolants and up to five years or 100,000 miles for an extended drain coolant. Is coolant flush necessary?