F22 African Ebony new in USA - I got my cars oil changed for anal

F22 Hot Big Booty Darkskin African Ebony recently moved to San Antonio, Texas, USA from Africa (you can see me on my page). I had just got my first car here and I needed to get my oil changed for the first time. I dont know anything about that kind of stuff so I found someone to do it on facebk market but he isnt pro. I told him I dont know anything about cars, he mentioned that he thought my pics were hot and he would do it free if I let him fuck my ass raw. He really wanted bare anal sex the most he kept asking for that specifically. I agreed even though he didnt have a photo, he showed up he looked ugly but when he saw me he told me he wont last long so needs to bang me a few times at least to cover the oil change labor cost, I already covered the parts. He says he is really hooking me up since I dont know about this stuff. I noticed ever since he changed it my car has been dripping oil onto the driveway but he said thats normal. Are trades like this common in this country? Im still brand new in America and have no idea what an oil change is worth.