This is exactly why I avoid shady dealerships. I’ve been to one that offered me a service on a part I don’t even have based on mileage recommendations. This woman went in for a basic service and when she went to see why it was taking too long she found her engine bay in pieces. The mechanics were using her brand new car for parts. This is ongoing so I’m not sure what they did as compensation but for me a free oil change is not going to cut it. Back when I had the 2004 Mitsubishi Evo, I mistakingly took it to the dealer for an oil change, I was warned against it because I had many aftermarket performance parts added and tuned. It was pushing 600hp which was double what it had at the factory, it was a beast at the time. I know the oil change normally only takes about an hour, it’s such a basic service. But when the tech was inspecting my car for their multi point inspections, he said my struts were bad and wrote me up a quote for new suspension, an alignment and he said my muffler was bad because I didn’t have a catalytic converter anymore. I also suspect he was the one who stole my carbon fiber shift knob, they replaced it with a stock one. They knew I had allot of work done and they even personally told me my warranty was voided which was illegal. Later on a law passed that said it’s only voided if the part replaced is what caused the issue. So no longer can they void my warranty because I changed my air filter box to a cold air intake. The suspension was HKS from Japan, brand new. No way it was having issues, I seriously think he wanted to replace my suspension because he wanted to keep my aftermarket suspension. I’ve heard of dealerships swapping parts before. They will blame my expensive parts and replace them with the factory parts all the while I’m paying them to steal from me.