I wouldn't hesitate to buy the very first fill up from a new station. The quality of new tanks is outstanding and they make sure all connection pipes are flushed and cleaned before opening. As other folks have indicated, over time the most important consideration is using a high volume outlet. This reduces the chance of water and insures proper formulations for the temperature. While there a differences in additive packages (especially for gasoline) all major brands are certainly satisfactory. All oil companies have exchange agreements with other companies (refiners) so in a given geographic area all product, regardless of brand, may (not always) come from the same refinery.
\'03 Chevy 4x4 Dually EC, D/A. Rancho RS9000X, Air Lifts, Line-X<br />\'03 Lance 1030 Camper