Has anybody been using Star*Tron,a Star Brite product for fuel treatment? It uses enzyme technology. If the product is as good as claimed, i do not know why anyone would use anything else, especially a biocide based product. I have reviewed their web site testimonials and they are obviously good. I have Catalina 350 with a Universal M 35B diesel, about year old. I have only used Stabil for winter storage to date.Is there anyone that that does not treat their fuel, at all?