yep, that's right.

1980 300TD Wagon, 310,000, runs great.
The other day I noticed a 6" diameter oil stain in the carpet below my brake pedal. The oil drips down ONTO the brake pedal directly, then to the floor. The car does go through oil, sometimes quickly, sometimes slowly. I did recently top it up. I looked under the hood for signs of recent leaks of oil and around the master cylinder, couldn't find anything. I don't even know what black oil should be running through that part of the car.
Can't find previous posts that describe this problem.
Any suggestions?
floydo