there are NOT thousands to choose from
if you have a specific need that is best fitted by specific GS610 properties, there is actually only 1 choice: GS610
cause it is, GS610 is unique and severely patented: have a look on technical papers on brake & friction fluids: GS610 is of a particular category, taking the best of other categories above and below it.
I believe in that product.
I also know they did start a unit of high quantity packaging (5 and 10 gallons barrels) a few weeks ago - however I don't for WHO or WHAT, and they did not PR about it, and I have no clue of WHEN production for that packaging format will start and deliver.
But this is enough to me to make me hold this quiet thing...