Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: So I learned how to change my own car’s oil a few weeks ago and was super proud of myself. You know, researched it and watched a video and got my own tools and did it all myself. No problems. I was feeling pretty confident. 

 My girlfriend mentioned that she hadn’t changed her oil in about a year, had not even topped it up, and I was shocked by that. I told her that’s way too long to wait for an oil change. So I offered to change her oil for her, too. BTW she drives a 1995 Honda Accord. She said she could just take it into a garage and pay for some one to do it, but I insisted I could do it for her if she just bought the oil.

 So I looked up which oil and fluid capacities her car takes (gasoline engine, cool climate, 5W-30 should do the trick). I proceeded to remove the oil plug, and I noticed that it was SUPER tight. I had to really reef on my wrench to get it loose, but it came off in the end. The oil drained into the pan super grubby and I showed it to her. I cleaned the plug, wiped the area around the thread on the reservoir and screwed the plug back in and tightened it up. I made sure it was pretty snug (I’m a strong guy and gave it a few really good tugs) but definitely not as tight as it was when I first removed it, because that seemed ridiculous. Put the new oil in, ran the engine for a while, checked the dipstick a few times, and made sure it had enough. She was happy, and I was pleased with my “manliness” Hahahaha. 

 A week later, this morning she texts me before she goes to work saying that her engine cut out and wouldn’t start. I tell her to check the oil level. Dead empty. I tell her to check underneath to see if there’s a puddle of oil underneath. Yup. She mentions the engine was making knocking sounds before it cut out. 

Fuck. Sounds like the engine ran out of oil and seized. She took a cab to work. Haven’t gotten a diagnosis yet but I’m going to assume that I didn’t put the oil plug back in properly, or the thread got damaged somehow, and the oil all drained out and her engine got destroyed. 

I feel like a piece of shit for insisting on changing her oil myself and that it’s all my fault. AITA? 

changing my girlfriend's oil in her car, but messed it up and destroyed her engine