Pinholes on the "top side rail" of your radiator is the cause of your slow leak redlegend... DITTO! as far as repair is concern. I myself went through the same experience with my last radiator, did everything I could think of, cleaned and flushed and used "radiator sealer" to no avail., did not bother with repair shop cause they'll just offer you new ones.redlegend said:I've noticed that the top of my rad always has some coolant on it. There is a little lip that connects the top piece to the rad core itself, and its always wet in a couple spots. The rad isn't that old, could it just be repaired, as I'm not prepared to spend the $$$ on a new OEM Rad.
I found my replacement from the junkyard... took it to a different radiator repair shop, had it pressure/flow tested and all is good, that was last summer and still holding up with no leak.
New OEM radiator is way bit pricey 2me so opted the cheaper route