On Thu, 5 Mar 2020 07:21:37 -0800 (PST), fred wrote:

Incidentally red and green diesel can both be washed.

The dye maybe, but there are other tracers or at least that is what
we are lead to believe. B-)

And don't forget yellow for 28sec kerosene aka paraffin, heating oil.

--
Cheers
Dave.