Put DEF on the diesel delivery when the fleet needs both
Modern diesel aftertreatment needs DEF. A diesel drop that leaves the jugs for a retail run does not finish the yard.
Ask for the package, not a brand speech
Distributors deliver DEF in totes, drums, or a metered drop into a tank meant for it. The right question is what they will bring to your ZIP and what storage they expect on site. Heat and cold change handling. The distributor should say what they will do this season, not what a brochure promised last year.
DEF is not a combustible fuel. Fleets buy it beside diesel, so Bulk Fueling lists it as its own product. Search DEF when that is what you are short. If you also need diesel gallons, write both numbers in the notes.
Do not assume every diesel wagon carries it
A strong ULSD program can still have no DEF. The DEF filter hides those listings on purpose. A company that lists both can take one quote with the diesel as the selected fuel and the DEF quantity in the notes, or you can send a DEF quote from the same profile.
Storage is part of the order. A tote left in the sun or a tank that was never meant for DEF is how product gets wasted. Ask before the truck is dispatched.
Questions
Can DEF ride with dyed diesel and with ULSD?
Only if that distributor sells DEF and the diesel you need. The products still go to their own tanks.
Is a jug from a truck stop the same buy?
It is a different errand. This directory is for a distributor who delivers DEF to the yard or the job.