Gas oil and diesel (for motor vehicles) may be the same as far as distillation, the basic chemistry, goes but there are serious differences. Diesel contains additives particularly a Cetane number modifier. This, I think, speeds up the ignition of the fuel after injection.
JA
Having used gas oil and, accidentally, diesel at work for testing gas turbines we in the end had to seek advise from a fuel blender on the terminology we used. This was after paying the road fuel tax on 35,000 litres of fuel.
Edited By JA on 04/12/2020 18:00:27