I’m Northeast also and use the appropriate Power Service year-round....white bottle in winter and gray in summer.
I also just started using a biocide this year.
Some guys also recommend Stanadyne or others.
I would also get diesel at a place that sells a lot.
Diesel was gelled at the fuel station’s pump during a cold snap couple years ago...certainly supported the need for an additive for me, and the station serves the company’s own vehicles, town snowplows and school buses.
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