If you had your own colour dye what would be the odds on the purpetrator of a theft of your diesel being dipped at the side of the road.
As if they are not caught in the act then that’s about the only way of getting caught.
Even then would you not have to have the colour registered on the C & E’s computor system to trace it back to you
A better idea would be for a marker to be added fuel in the trucks tanks with a unique identifier for every company with a registered vehicle (similar to micro dots etc)
Then if anybody was dipped at the side of the road and your identifiers were in a truck that dosn’t belong to you then the person/owner of said vehicle could be arrested for theft (that must be reported) and duty evasion