Competition in the world of business is a good thing for the consumer, right? It keeps prices down and forces innovation. Well, the motor oil space isn't as competitive as you might have thought. For ...

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SAN ANTONIO — Celeste Contreras, 74, loves her little Lexus convertible. On March 1, she took the car through a Shell gas station car wash on Vance Jackson. After the wash began, she said she heard ...