theoldwizard1 wrote:
I am cheap. A large gob of Vaseline does the same. Looks ugly, but effective ! Corrosion is a chemical reaction with oxygen (air). Block the air and no corrosion !
Excessive corrosion around a battery post is often a sign that the gases in the battery are leaking past the seal between the post and the case. Typical on older batteries.
^Correct.
And to add, an ad hoc fix for leaky battery around the posts is clean them up and run a bead of rtv around the bottom of the posts, sealing up the gap.