Both Lusterkote and Ultracote are enamels, doen't make them compatible however.

Another fuel proof auto paint is Plasticote ACRYLIC lacquer. Make sure the fine print on the back of the can says ACRYLIC however as some of their products are enamals. The Truck and Van line of paints are generally acrylic lacquer. They may not mention that it is acrylic lacquer on the front of the can.