Hi all! I have a '82 300SD that keeps leaking oil. I've heard that all diesels leak some oil, but is there any way to get it to stop leaking? I normal mechanic has tried several times to fix this leak but has been unsuccessful (he isn't a MB mechanic though) and said that it's just the nature of the diesel to leak. Any suggestions? All those black spots are ruining my driveway! Thanks in advance.