Originally posted by speedshow
its a 93 widebodyek
im replacing the rad so would the cleaner be necessary
thank you
how much would a new rad cost
The flush cleans out all the corrosion and whatnot that may be in your cooling system, not just the radiator. Whether or not that's necessary would be up to you. If you haven't flushed your cooling system in a while, I would go ahead and do it before putting a new radiator on.