My little island community is served by one fuel
supplier-Irving Oil.They also supply fuels from Me. to Miami
Our furnace fuel,stove fuel,road diesel & boat diesel all come by ferry
in the same tanker truck & is stored in the same bulk tank.It is then delivered around the community in one 2000 gal truck.
All our diesel commercial fishing
boats,along with all diesel road vehicles(1/2 tons & cars),farm tractors,plus oil furnaces & anything else that burns furnace oil or diesel 1 & 2-use the same fuel from the same tank.
If the local delivery
truck is going to fill up the road diesel tanks
at local service
stations,red dye is dumped in that load,to show it is road taxed.
If truck is going to deliver to commercial
boats or to home heating tanks
or other non-taxed users,no dye is added.
The fuel itself is identical!!.
During the winter,the refinery sends a blend of D1 & D2,to prevent gelling in lo temps.
Sulphur in diesel helps lube the injectors.Older diesels were designed for hi-sulphur fuel & will wear injectors on todays EPA mandated lo-sulphur diesel fuel.
You can add additives to your fuel to combat this wear in older diesels.
Please read the att'd link.It is a brief but accurate story about fuel,& will eliminate much outdated info.Mechanics Corner: The truth about diesel fuels