Red diesel on vehicles on the roads?

packnrat wrote:
searching your fuel tank with out a warrent is illegal.
the constitution of the United States of America
says so. try reading it sometime.
under the heading of IV
the right of the people to be secure in there persons and property.

so for a govermentsl agency to just open your fuel cap and "test" your fuell would get thrown out of a proper and non corupt court.

Lawyers chime in here.
Article 4 of the bill of rights protects us from unreasonble search, however if the LEO has grounds to suspect a criminal act he may search without a warrant. So if you have a broken taillight, or any infraction they can substantiate, they can. Vehicles on public land are not given the same protection as a home. Driving is not a right, it is a privelage.