VX-6 battery additive, found on JC whitneys web site and catalog for $5.00. Suppost to be a big seller over a million sold, so someone in here might know something about it or experiences with it.

Heres the deal, I plan on installing an Interstate MTP-93 that has 850 CCA and add some VX-6 to it. This is for a diesel, winter time is coming soon and my battery is 5 yrs old (and went dead from being discharged all the way many times) and I am thinking about changing it now, before the weather gets too cold.

Any thoughts or suggestions?