The fuel was largely the cheap stuff that other aircraft weren't using; the performance they got for that fuel too was worth the price at that point in the war. Though something like a Ta-153 would have been preferable as an interceptor:Taking a peek on the Me 262, seems it carried around 2500L of fuel (He 162 - up to 675 kg, or around 750L of jet fuel). So let's pull the plug, such a gas-guzzler Germany can ill afford. Double up the efforts for perferably to designs for 1-engined fighter.
The fuel was largely the cheap stuff that other aircraft weren't using; the performance they got for that fuel too was worth the price at that point in the war. Though something like a Ta-153 would have been preferable as an interceptor:
https://en.wikipedia.org/wiki/Focke-Wulf_Ta_183
That is a general issue, in that they built up their petrol engine production pre-war, so didn't have a large diesel industry able to accommodate Heer needs, especially when diesel was being used by the KM nearly exclusively. So they already were spoken for in a lot of ways. It just so happens that jet engines could run on a combo of diesel/kerosene.If it is so cheap, then better make more diesel engines for the Heer to use it. No need for bleeding edge technology there. Please not ethat I don't suggest abandoning the jet fighter idea.
The Ta-183 really looks like a contender, stuff the Jumo 004 on it for starters.