So I had a Duralast Gold replaced yesterday (just outside of the 3yr free replacment warranty, of course). The guy helping was installing the new battery and wasn't happy about finding vaseline between the connector and the post itself. I looked at him a little crazy as I've used Vaseline for *about* 20 years. Those green/red felt things suck. Any other tricks suck. I always end up having to use some baking soda & water to clean terminals/connectors when I install new batteries and Vaseline has always worked wonders for me. He went so far as to say that the Vaseline (I didn't tell him Vaseline, I let him believe Auto Zone installed the battery & probably used some terminal grease) being between the connector and the post is what probably killed the battery. I'm a car guy so this would surprise me but maybe I'm wrong on this one.