Since my car was in this time for more than it's usual oil change it was more involved. They explained to me what I needed to get done and why. I dropped my car off and they promised they would call me with a estimate. They did and told me my car would be done late that afternoon.
Long story short, some things came up and I needed my car earlier in the afternoon. I called them and they made it happen and I got my car back sooner and even under the estimated cost.