I know that you have been bombarded with a lot of good advise, but to rule out the whole in the tank theory, do you smell gas around the back of the car? If you have a sizeable leak, you will be able to smell the gas guarenteed.
You probably got bad gas from the station. Asside from going to the busiest station, avoid a gas station if it has a tanker filling the stations tanks. As the fuel goes into the station'* storage tanks, it will mix all the crud and water that has settled to the bottom. There is no way of knowing when they have filled--it is always a chance you take, but definately stay away if you see the tanker there or if it is pulling away. Good luck.
Retired Moderator, The Bonneville Club www.bonnevilleclub.com
RIP Oldsmobile, April 29
1995 Bonneville SE Supercharged (Stock)
Current Mods: Dirty GYM Sock air freshener.