Once again the English Language escapes this guy...
I said, "on ONE of my Fleet Trucks..." meaning one of the trucks I rented from Enterprise Fleet, not a "Fleet of trucks" and yes, I keep the bottle for "traceability" to prove the origin of the fluid used. I do not need the hassle of "He Said, Dealer Said" with my Enterprise Agent.
Once again... not all Bulk DEF is formulated to Road Use Standards, especially if you are buying Agricultural DEF which has many other components. So buy what you want, keep the bottle or not... but if your warranty and the hassle with the Dealer's ******** is not a problem because you wipe your arse with cash, go ahead. If you like to keep the money you earn and not give it away on needless repairs or stuff leading to such, my advice is warranted.
Here ya geaux:
https://www.ppclubricants.com/is-all-diesel-exhaust-fluid-def-the-same/