I watched a TV progrramme a while back where our Customs & Excise chaps were hunting down those illegally supplying 'red' diesel (which is sold tax free to farmers for use in farm machinery and to fisherman for use in their fishing boats) to ordinary motorists. The scammers were also buying in central heating oil at about 18 pence a litre (about 32 US cents), adding 5 gallon drums of regular lube oil and selling at twice the price to local taxi drivers etc. The price of diesel in the UK at the time was about about 75 pence a litre ($1.25 per litre). Heating oil I believe is very similar to Jat A1.
If you do the sums you will see that heating oil and Jet A1 are both sold free of 'Road Fuel Duty' which today is running at about 50 pence a litre here in UK (about 90 cents). Big market for savings but how the engine mapping will cope on a modern turbo-diesel with a common rail feed I don't know - not well I expect)
G
