The corrosion protection package in the antifreeze does " wear out " so if you do not
change the antifreeze / preferably distilled water mix the coolant mix will become
acidic and not provide the corrosion protection that is required
Standard antifreeze should be changed every two years. Long life antifreeze needs changing every five years.
Most manufacturers recommend that you change antifreeze every 2 or 3 years or after driving 30,000 miles. Always best to check your owner's manual for specific recommendations about your car. 3 years puts me at about 30,000 miles, so I change it then.
Dex-cool is recommended to be changed every 5 years.
The antifreeze change and flush interval is changed from what the owners manual says, Usually every 5 years.The interval is now 2 years.
18 months for standard antifreeze, 8+ years for silica free antifreeze.
Modern coolants last a long time. I would however drain and replace the coolant every 5 years. Be sure and create a 50/50 mix of antifreeze and distilled water. Do not use tap water.
Usualy every 2-3 years, or after driving 30,000 miles. I woul check your owners manual.
flush and change cooling system liquid every 2 years. use correct liquids for your vehicle.
some people have said you should and others have said you dont have to. I myself have never put antifreeze in the during installation in all the years i have worked on cars
If you only have water in your cooling system you will eventually get rust from the engine block. (bottom half of the motor) Put some antifreeze in it and change it every couple of years as it eventually becomes acidic and can damage alloy parts. You can do a litmus paper test on the coolant every service to check.
Conventional antifreeze is generally good for older vehicles. You can also consider 'long life' antifreeze - it's good for all make, model and year of vehicle or original antifreeze color. PEAK Long Life Antifreeze will protect for 150,000 miles/5 years. If your antifreeze hasn't been changed for 2-3 years for conventional coolant/antifreeze or 5 years for long life formulas, it's time for a flush and fill. - PEAK Automotive; peakauto.com
NO Absolutely will not hurt anything, just be sure to change it every 2 years as recommended for standard ethylene glycol based coolant.