who on earth wants to change the colour of their diesel ?

[sarabande]

Apparently these people can do it, if one really wanted to.

diesel colour chemical miracle

I'm pretty sure it won't alter the chemical tracer in lowertaxed stuff, but if you are in fear of someone stealing your fuel, it might be useful.

 

[alldownwind]

Ah, would it dye red fuel blue? Not that I'd want to, of course.

 

[ADLS]

British Railways used to colour their road diesel back in the 60s.

 

[nedmin]

they used to use loaves of bread as filters to get dye out during rationing, probably need a whole bakery to filter enough fuel for a fast boat.

 

[2Tizwoz]

Loaves of bread?

Crumbs! /forums/images/graemlins/ooo.gif

 

[Guest]

Red ok ... but the yellow marker ??

That is chemically bonded into the fuel and needs a small lab test to indicate. The Red is mechanical dye only.

 

[alldownwind]

Re: Red ok ... but the yellow marker ??

Having read the above - could someone clarify please what is added to red diesel to make it red? Is it just a dye, or is there a 'chemical marker' that is still present even if you change the colour of the stuff with another dye?
And if there's a chemical marker, when someone comes along and checks what you are using, do they check for the presence of this chemical?
Would just like to know, of course.

 

[duncan]

Re: Red ok ... but the yellow marker ??

both - as sbc has said already

 

[Guest]

Repeat after me ....

Red dye can be filtered out but has a residual effect on the tank ... it can be detected down to parts per million easily. It will take quite some time for your tank and also the marina tank to stop shedding red dye. I supspect that some cleaning of tanks may be necessary for suppliers.
Yellow marker cannot be removed from the fuel ... as to detection from tank ... actually cannot answer that one !! I suspect that it is less able to be detected from tank itself ?? But in the fuel - "it shines out like a shaft of gold when all around is dark !"

 

[Cantata]

Re: Repeat after me ....

Thank you Nigel - interesting, I had no idea that anything more than a dye was involved.

 

[alldownwind]

Re: Repeat after me ....

Me neither - but I guess it has to be made a little more difficult to get around than by simply changing the colour!