I am with him. Jet fuel is diesel fuel. My ship burned Diesel fuel until our second deployment to IV Corp when we filled the tanks with JP-5 for the Seawolf gunships. The only problem was that it did not lubricate as well, so we carried a couple buckets of extra injectors for when one froze.
I knew a guy that bought race car fuel at an auction. He didn’t know at the time that it was race car fuel, only that it was fuel.
He would pour some in his tank and fill the rest with regular fuel to create a high octane mix that he could use in his car.