Forget it!
It won't make a blind bit of difference!
Petrol, kerosene, white spirit, and that sort of stuff all mix fine with mineral oils such as derv / diesel, and will do no harm IN MODERATION, OCCASIONALLY. like some in a tank of diesel.
But, best not to make a habit of it!
BUT, if you were like STUCK with no fuel, and there just happened to be a big tank of kerosene 28 second heating oil looking at you, then go for it BUT, you would need to throw in at least TEN PERCENT of cheap clean engine oil into the kero to make it a bit more "oily" and give it some LUBE properties else the neat kero will almost certainly damage the injectors of a TD5, or the injection pump of a real diesel engine.
The absence of lubricating ability is the main reason why neat petrol and kero are bad for diesels. You can get over that by adding a decent amount of clean oil.
CharlesY