I remember when there was no such thing as self-serve, and one of the big oil companies had a policy that if the attendant did not clean your windshield and offer to check the oil, "your gasoline purchase is free."
That was a few years back too.
If you remember that, then you probably remember when Fina offered pink air. This was while the corporate motto was, "Work hard, sell a good product, and don't try to kid anybody."