Quote:
Originally Posted by herkyhawki
The third "new" radiator seems to have no leaks. The auto parts sales guy suggested I add stop-leak when I put this one in because it is a "common problem". I did not add the stop leak (yet), just hoping it holds as it should.
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you need a 15 psi coolant cap. if the cap is more than 15 psi find one that is 15 or lower psi..seen this before !
stop leak is good for metal / gasket leaks...with the radiator plastic and seal this is moving to much to be effective...the pressures being too high for the radiator to handle it then the O ring gets blown out...
In the past I have replaced these cracked plastic tanks..they all crack at the point where the hot coolant enters the top of the radiator.