I recall an RAF Warrant Officer being Court Martialled (in Germany, about 1982) for disposing of "unwanted" AVTUR in his married quarter central heating tank after helicopter exercises. He was a bit blatant about it though, using his army driver and Land Rover to deliver it! He didn't even wait until dark...
I have been recently told by a diesel van specialist that today's low sulphur diesel blends are hard on injectors, so maybe it's not so different to use kero based fuels after all.
However, I also think it is very environmentally sound to dispose of contaminated fuel by thoughtfully putting it in a car diesel tank. Must get a diesel car one day.....
