I've been using Techron (make sure it's the "concentrate") about 3x per year in my '92 Saturn SC since I bought it back in '98. At the time it had 51k miles. Now it has 185k, and has never had a fuel system problem. Original injectors, runs like a champ. Pat Goss (local "famous" car mechanic w/radio show, also seen on Motorweek) told me he constantly sees old Saturns with fuel injection problems. I can't say for sure the Techron has done the trick, but it looks good to me. My '03 9-5 Aero is getting a bottle every 5k.
jeff