I have had very poor experiences with Walmart oil changes.
The oil was overfilled by a quart. The kid was really upset when I mentioned that he overfilled my oil.
One time the Walmart employee went to use the wrong oil. I had to scream at him to get him to use the oil that I purchased. After this happened, I stopped using this Walmart.
The other Walmart that I started using was pretty good for a few years. However, all the good people found new jobs, and the service went down the tubes.
They also have a hard time filling my car with oil, it seems like they only got half of it in the car. With my corolla, you have to pure it in very slowly. The manager and assistant of the auto department thought that pouring it in faster would work. A few times I actually showed them how to pour the oil in my car. The old man got extremely nervous, and he told me that I was not allowed in the service area.
Another time, the kid had trouble opening the oil jug. He pushed the foil in the jug, and he could not get it out. Three Walmart employees were trying to get the foil out. So, I grabbed some new oil that I opened myself, and told them to use it.
The Walmart employees at this “auto center” are extremely rude and completely incompetent. I personally will never deal with another Walmart oil change. It is just too stressful for me.