I'm pretty sure this is the mowers third oil change in its entire life. He got it off the original owner for some housework he did, and it was nearly new then, it was serviced once in 2008 according to the sticker on the oil filter I took off of it in 2015. The mower has aged a lot since I worked on it last. It's not in very good shape, the deck has a massive rust hole in it, along with the weld repair I had to do on the discharge port, the spindle bearings are worn out, the hood is falling apart and half gone. The front steering has more slop in it going over bumps than I've ever seen on a mower, and I've worked on a lot of bad ones. This is probably it's last major service if I were to guess. I think it's around a 2000 year model. The engine smokes a bit on startup sometimes, but according to the owner it's always done that. Runs like a top otherwise. It's been rode hard, for sure. Then again, everything this guy owns has been rode hard and put away wet, if even put away.