Back in January 1996 I bought a brand new 1995 Trans Am and found out that it had actually been built in September 1994, so the oil in there was already a year and a half old. Because the car had been on the dealer's lot for so long, it also had quite a few test drive miles on it, over 200 actually. I had a free oil change owed to me by that dealer so I ended up getting them to do it within the first week of owning that car. I just didn't trust the condition of that oil, new cars on a lot often get started and moved a lot, and the oil never gets up to temperature.