black smoke reducer

[Longboardsurfer]

Hello

I have yet to get my Delica as it is still in Japan waiting for the ro ro.
How ever I'm trying to looking to as much info as possible and just came across this item and was wondering if anyone has tried or even heard about the item before. Not really sure if it is really needed, but i would like to do as much as i can to run the truck as clean as possible before i can afford to make fule alterations to a better optioin then diesel. I am glad to hear what ya'll say.

Have a fine day. 8)