I have a vehicle that doesn't have a dealership in the area so I often order OEM parts to bring to a shop so I'm not dealing with their O'Reilly / Autozone crap. I called and asked if they'd swap my transmission fluid and filters (with brand new gasket). They said they'd only do the service with their provided parts (which would be universal fluid and aftermarket filters) because they don't make any money off customer parts. I thought my request was reasonable (and a simple job with all the parts in my back seat). I suppose a lot of people bring shady parts off Amazon but I felt weird being denied this service. Why lose a customer over this? Is this a common experience these days?