Which Anti-Gel Additive for Cold Weather?

[ManxShearwater]

3.0L Owner here--2023 Yukon. For the second time this winter we've had our diesel fuel gel on weekend ski trips to VT. The situation is we buy diesel in NJ (which I assumed was winter blend), drive to VT where the car sits for a couple days and the fuel gels. Both times temps were -5 to -10 overnight warming up to +10 during the day. Cold but pretty typical for VT.

The first time it happened, we had to have the car towed to the dealer and warmed up...New fuel filter. Tech said there were multiple fuel pump error codes on both the low pressure and high pressure side. After that, we bough a couple bottles of AC Delco Cold Flow Additive.
Second time, we were able to limp to a gas station and top of 1/3 of a tank with VT diesel and added a bottle of the cold flow additive. Eventually de-gelled the fuel...engine stopped stumbling and the whine from the fuel pump in the tank went away. Yes, we had the engine block heater plugged in overnight but my understanding there isn't a heater in the fuel tank.

1) Is there any way to know whether a gas station is selling winter blend diesel?
2) Are there safe alternatives to the AC Delco Cold Flow Additive that won't ruin the injectors? It's not easy to find and is expensive. The GM technician warned not to use Hot Shot or similar additives because he has seen injectors that needed to be replaced as a result $$$$

 

[Stbentoak]

Just use Power Service in appropriate amounts whenever you anticipate issues, but diesel in that area should be treated to handle that temp anyways. Won't hurt a thing.....