Quote Originally Posted by dr. d View Post
some repairers do not repair plastic-topped radiators. "throw-away" radiators daw.
others replace (daw) the plastic tubs with brass tubs. don't know if this is true, or if the repair lasts.
Had the plastic tub replaced with metal on my truck. Still ok until now, around 5 years later. Best thing to do would be to use premixed coolant to make sure corrosion doesn't start. I don't know why, but even with our best effort to get the right ratio of coolant concentrate to water, rust starts to appear a few months after.