Stabil is a good idea for long term storage (months). Gel inhibitors for low temp operations is a good idea.
I don't think anyone mentioned Biobor or equivalent biocide. There are thingies that live in storage tanks and various vehicle and tractor fuel tanks. These organisms only need just a little bit of moisture to stay alive and eat diesel fuel. I don't begrudge them a hearty meal of diesel oil but they reproduce AND reproduce and can clog filters and literally gum up all those delicate parts in the injector pump that mechanics try to keep so clean. This problelm is not rare. Once you get it a very difficult time will be had in getting rid of it. It is also known by various names like black slime, black diesel death, and such. It also plagues disel powered boats.
If you use a good biocide according to label instructions you will probably never have a problem with it. If you have a mild case there is a "shock" dosage to be followed by a maint dose. Changing fuel filter(s) after the shock dose is a GOOD IDEA. If you haven't had the experience, count yourself fortunate. In hind sight I have never known anyone who would not have rather used the product as a preventitive instead of as a curative.
Since we ultimately do not know the history of the fuel we buy the best we can do is buy from a high volume dealer with clean tanks and hope for the best (and use a maint dose of biocide.) I have seen the difficulties ignoring this threat can cause. I saw it in others and I even got it in my Dodge truck when it was less than a year old but caught it early and treated for it.
I treat my overhead storage tank as it could be vulnerable and I treat my truck's tank. I have no clue where my truck "caught it" but it had to be from a regular filling station.
It is used to treat jet fuel. Planes can't just pull to the side and fuss with a filter.
Here is just one supplier, the one I have used the most but not the only one.
http://www.hammondscos.com/fuel/biobor_jf.html
This is not snake oil on the level of magnets clamped to your fuel line.
Pat