I just got back from shopping, and I left the car at the automotive service, while getting groceries, because I needed a new tire on the front. I don't shop very often, so when I do, it is somewhat of a chore.
When I had checked out the groceries, I returned to automotive to pay for the tire, but I was told that they had refused to service it, because it had a water leak. I knew that it didn't, but I had just filled the reservoir tank before going to the store, so there may have been some kind of overflow.
When I asked the clerk why that would matter, she said that it was a fire hazard. When I told her that antifreeze didn't burn (actually, it was just water), she wouldn't accept that.
When I finally found my car, which had been parked at the far rear of the store, I spoke with one man in the shop, and he said that it was just store policy.
I can't swear that there wasn't some kind of leak when I arrived, but there was no sign of one when I returned to the car, and there was no sign of one after driving home.
I will continue to shop at Walmart, but I will never use their automotive dept again.