I use and sell Hot Shot's Secret Winter Anti-Gel(https://www.hotshotsecret.com/diesel-winter-anti-gel/). Archoil is also a good product as I've used their regular fuel treatment but not their winter additive. As for Power Services, my work fleet used it and it caused horrible problems with fuel filters gelling. Not trying to persuade you in any particular direction, just stating my experiences/opinions.
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