Ok, so there is either a MAJOR quality issue with heater cores these days or there is something else going on with my 96 Impala as my heater core is leaking AGAIN after just several months of last changing it. I have already checked my cooling system for electrolisys and that was negative. I have inspected inside the heater box to make sure there isn't anything that could be poking a hole in the core and now i'm lost as to why my car seems to like eating heater cores. What is THE BEST brand of heater core currently available? I have ran AC Delco's twice and Spectra once and Vista Pro once. I'm getting tired of replacing these damn things and even more tired of wasting money on anti-freeze.