You cannot, for example, expect to run a biz jet on diesel.
Probably a wise choice there,but you CAN run Jet A in a diesel truck.Lots of times I would fill up with the fuel after fueling the helicopter at the end of the day.
The red diesel is non taxable fuel for ag,farm and the likes.Out here in Ca. they routinely check the fuel tanks on over the road trucks at scales and roadside inspections.BIG,BIG fines if caught.