Since my firewall does not allow me to see that URL for some reason, I am assuming that you are talking about Power Service Arctic Express in the blue bottle. If so: Yes, I use it, every time I fill up. I do notice an increase in power as compared to just running the normal winter mix I find around town. I buy it by the case from my local Cummins store, and I also purchase it for my friends who are not so lucky and don't live near a Cummins store.
Summer months I run their Diesel Kleen summer mix (gray bottle). If I am out of additive and in a pinch, WalMart carries Power Service year-round fuel additive (white bottle). Also, for emergency gel problems, keep a bottle of Power Service Diesel 911 (red bottle). There are many opinions on what fuel additive is better, but all the truckers I know use Power Service. Since I've been using it, I have enjoyed better mileage, better winter performance, and have not gelled a tank of fuel.