Hi guys I just bought my LS 400 a couple of weeks ago and when I was getting it inspected,my mechanic told me the rear seal was leaking.He completely cleaned it and told me to drive it on the weekend,since the oil level was full.Anyway when I went back on Mon. it was of course leaking for sure.My big question is this, how would you know when theoil gets to low,without putting it on a lift, and can you just live with this problem.I read some guy said his was leaking for 2 years.Thanks