My '83 240D that I have had for a month now has developed a diesel leak. I filled it up for the first time (I have only been partially filling it up before) yesterday, and now there is a puddle of diesel on the ground after it sits for a while. I look under the read of the car, and the diesel is coming out of what looks like a drain tube near the rear axle. I thought that this might be an overflow, and I might have filled it up too far. But it has been leaking for 24 hours now and am suspicious. Any ideas on what might be going on?

Lance