If people only knew what is in some of the additives
You would be making your own from ingredients from their garage
I went to a 6 week equipment school in the late 90s
At that school they had a book that you will never find anywhere.
It has the ingredients that go into making those additives & a whole lot more lubricating automotive products.
As far as i know, i am the only person that has a copy of that book
It is actually MSDS sheets that covers all of the products that are used in the drive trains, even the products like STP, that has a secret formula