coolant question?

[superrat]

i've been using the valcool vnt800, mostly for the fact that the local supplier stocks it at a reasonable price. so today i go to get another pail and end up leaving with vp800 005b? does anyone know the difference between the 2?
i couldn't seem to find a difference on the valenite site aside from a conversion chart that lead me to believe this was a newer version...
just curious. thanks --phil