[Jacksonlll]

You can chase the head gasket leak, but don't assume the radiator is not plugged. Most shops can't remove the top tank to rod the tubes out. Most do a flush or even heat things up, but they don't flow test them. Just filling it and letting the water run our tells you nothing. It should flow about 35 GPM. Most old cores are plugged to some degree and they must be mechanically cleared. If there is no flow through the tube, nothing you put in there will magically clean the tube out. Check with your shop. I'm pretty sure he did not rod out the tubes. Good luck.