Sorry not a myth - section below taken from parlimentary recordshillingdonpete wrote: that is a myth
a friend of mine is a tanker driver, many times when leaving the terminal, he has himself thrown the die into the tank himself
there are no markers.
usually red diesel if filtered down through a different micron filter, but if none is available before delivery then normal white diesel is used
white diesel is itself dyed.
Fullers earth is the traditional method for removing the dye
and there are many places that sell "dye" for diesel, you can have almost any colour you like
You are here: Parliament home page > Parliamentary business > Publications and Records > Committee Publications > All Select Committee Publications > Commons Select Committees > Select Committee on Northern Ireland Affairs Minutes of Evidence Wednesday 1st May 2002
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Examination of Witnesses (Questions 80 - 99)
(Mr Gerrard) As I understand the law, the Euromarker has to be added to all rebated fuels in Europe, but you can still have domestic markers. If we found a marker that was better than our current markers—and in red diesel it is a chemical called quinizarin, in kerosene it is a chemical called coumarin—if we found a marker that was better than those then we could still add it because it would be our domestic marker. I can check whether that is the case but I am pretty certain that it is. We are certainly looking at the latest marking technology and we are working with some of the academics in the field. There are some very interesting things which are about in other areas which are being looked at to see whether they can be applied to oils. One is that a dye could be added which is part of the hydrocarbon chain, so if you try to get rid of the marker the hydrocarbon chain dissolves. Rather than having fuel you have sludge. Whether than can be applied to hydrocarbon oils is not certain but we have some academics working on that at the moment. We are always looking at ways we can look at technology to assist us. As part of the Chancellor's budget announcement we are to get better kit for our road testing units, the latest spectrometer technology which uses waves to detect colour. As the Committee knows from its visit to Belfast in February, we have state-of-the-art scanners on the tobacco side. We are always looking at new technology but it is a rolling science. I wish we had the answer now but it tends to take a little time.
Skippy