Old Biscuit says "Dyed Red is NOT 'premium diesel' fuel........it is NON-HWY Fuel that is NOT TAXED.
By law, this dyed gas is only for use in off-road vehicles, such as farm tractors, heavy construction equipment, and generators.
If dye is found in an on-road vehicle, the penalties can run into the thousands of dollars."
The premium diesel fuel I spoke of was years ago and well before dye was added to assist enforcement of people using off road diesel. Back in the 1980's and earlier off road fuel was not dyed - at least wherever I bought it. Coincidentally diesel fuel back then was not clear as water as it is now - it had a slight yellow color to it.
In short, I was not referring to off road diesel.