1979 Pontiac Grand Prix......I loathed that car. Then, when I turned 16, I got a job & bought a used 1983 Monte Carlo. I mistreated that car sooooo bad. I had it for four years. It burned & leaked oil very badly so I never changed it, just topped up when it got low. I did that for 80k miles. I do, however, suspect that my mechanic father changed the oil in it once or twice while I was sleeping until noon.
You would think that since I paid for the Monte Carlo that I would have taken better care of the engine......nope, I was a careless/wreckless teenager.
Oh, well at least I take care of my cars now.