Unless they damage it why worry? You know it works.
Then I would agree with you, they should have their own machine for that.It was just an oil and filter change and also both fuel filters. Nothing mechanically was wrong with the machine.
I should add they have a lot of large tractors and skid steers on site. In my opinion they just happened to use my machine since it was convenient.
He said he saw a service guy on his machine when he pulled up to the place. That's when he should of video him with his phone and show the manager.Don...it is in the past...the opportunity to do anything like that is lost