My company used Power Serve and still gave us a case to use in our depot. Didn't have good luck w/ it, yet PS also makes 9-1-1 (Good Stuff). Not sure who makes Meltdown. Many here will say to use this or that. Howes Diesel treat makes some awesome anti-gel. So does Hot Shot Secret. One of the best options is to make sure you buy diesel from a place that turns it over often and that more than likely, blends it as it gets dumped in their tanks. I buy my fuel at such a place here in NY, but still add anti-gel just as a precaution. Course Ford wants me to use their branded products, but have had very good luck w/ other products.