To the OP. Fuel gelling is a rarer occurence these days. Around September or October, the fuel vendors around here start switching to a winter blend that has no problem flowing in the typical temperatures experience here in the Pacific Northwest. We had a pretty terrible winter last year, I don't run any anti-gel additive in my truck, and I've done just fine. I also believe that the newest diesels tend to take measures to prevent gelling. In my truck, I have 2 fuel heaters, one for each fuel filter. I believe Ford and GM have similar measures to keep fuel warm and help prevent fuel gelling.
Really, the only time fuel gelling is an issue is either an unexpected major cold snap (before the vendors switch fuel blends), or buying fuel from south and driving north.