Well I have been watching a slow oil leak for about a week, oh this is the second week I have had the car since I bought it, and I'm pretty sure its the front seal. Anyhow, coming off the x way the car was real sluggish for a bit, and I was almost home. Turned down the radio, and I hear some bad knocking....oh sob I said, sounds like there isnt any oil. Get her home, and of course....no oil on the dipstick. I have filled her back up and the car runs fine until about 5 minutes, and I hear a slight skip in the engine, and it dosent really knock too loud, but you know its not running right, and the car shakes a little. I made an appointment for the seal, but I'm not sure what else I should do. New engine to think about, or get the seal, and just keep an eye on things? Thanks for any help chuckies . Now I know why the car was listed at $1900...97 sentra gxe.