I'm coming up on 40K miles on my '06 N, and I put about 12K/yr on it. I'm thinking of trading it in at 50K, but it's still running like new. I do all the scheduled maintenance like clockwork. Is 50K too soon? How many miles do you have on your 1800? When an 1800 starts to reach it's end of life, what starts to go first (seals, burns oil, frame, transmission, final drive??)? Thanks in advance for any help and advice.