I just returned last week from driving approx 3200 miles in my RX-8 (to California with stops along the way).
It had the "high speed oil light" issue, and I also developed a slow leak in one tire (probably from running over something on the road trip). So I took it to the service department at Freeman Mazda, where I purchased the car.
They did an excellent job and were very courteous. They scheduled me in with no lead time (called late one afternoon, was in the shop in the morning) and even replaced the tire at no cost (despite it being something I was prepared to pay for). I was very pleased with the service and will continue to take my car there in the future, despite the fact that it's not the closest dealer to where I live.
Freeman is located right near Texas Stadium on 183 (where all the other dealerships are).