Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 2003 Chevy Malibu radiator drain plug stripped › 2003 Chevy Malibu radiator drain plug stripped October 27, 2011 at 11:00 am #438770 silveralfaParticipant I too have heard bad things about old dex-cool. I understood that it was introduced to work with the reverse-flow cooling in the vortec v-8s.