in California has red dye added. There is a large fine if "Red Dye" fuel is found in a vehicle because no road use tax has been paid on the fuel. I haven't gone to a fuel dock in California since I returned from Mexico a year ago. The gas station I go to has "Red Dye", regular Diesel and "racing fuel" on the same pump. Next to it is another pump with the regular grades of gas. Every time I fill the car up I fill up a couple of 5 gallon jugs of red dye off road diesel as well. It saves me a few bucks and I don't have to go through the aggravation of going to a fuel dock. I have a fuel transfer system installed permanently so I just pump it filtered into the boat from the jugs I leave in the cart on the dock.