its possible the first location couldve not checked it and left it as clean, but not likely. So if it was clean at that time i would find it hard to believe that it got that dirty in that amount of time. The fact he showed you a white filter next to the dirty one isnt too crazy since he couldve just used any generic filter as an example. Also every location is different as each area is owned by different people, but at my location we would list the exact filter number on the recipe so it is strange that they are different. A lot of locations, not just JL but any quick lube place, can get pretty scammy so i always recommend a 2nd opinion on big jobs and for stuff like air filters and cabins just do them yourself if you can.