Sta-Bil diesel fuel stabilizer is a fairly new guy on the market, being released January of 2010. And most mechanics will tell customers to steer clear of additives, especially when the diesel engine builders say additives are not recommended.
As to diesel fuel needing stabilized, I have seen over 5 year old diesel fuel being sold by a fuel distributor. It was just fine! It was pumped out of old railroad tanks and mixed in the distributors 50,000 fuel tank back after the fuel shortage of the mid 1970s. Spent 6 years in those railroad tanks. No complaints from anyone about it not running good. Now this new ULSD, you will have to watch to insure that there is not moisture in the bottom of the storage tanks. If your fuel is dry, you will be okay.