As a general rule of thumb, you should get a coolant flush every 30,000 miles or three to five years, whichever comes first. Your car’s owner’s manual should also outline a more specific interval depending on the manufacturer.Click to see full answer. Hereof, how long does Toyota coolant last?Toyota recommends replacement of engine coolant at 100,000 miles, then at 50,000 mile intervals thereafter. The coolant in your Toyota does not last forever and will deteriorate through a combination of age and contamination.Secondly, why does coolant need to be changed? Corrosion can damage the radiator, water pump, thermostat, radiator cap, hoses and other parts of the cooling system, as well as to the vehicle heater system. And that can cause a car engine to overheat. If the corrosion inhibitors have deteriorated, the antifreeze coolant should be changed. Also to know, how often should engine coolant be changed? A typical mechanic will recommend changing coolant every 30,000 miles. But many will tell you, changing the coolant is not even on their radar. An owner’s manual might recommend changing the coolant/antifreeze after the first 60,000 miles, then every 30,000 miles.How much is a coolant flush at Toyota? Model Labor Parts Toyota Camry $79 – $100 $16 – $25 Toyota Corolla $79 – $100 $16 – $25 Nissan Altima $63 – $80 $16 – $19 Honda CR-V $55 – $70 $16 – $25