I have a 1977 300D, 177,000 miles. Mine uses oil at the same rate. I have a small leak at the oil filter housing as well, but not enought to account for the amount of oil I need to add.

Otherwise, the car starts great, runs like a top and I am following diesel don's advice, add the oil and keep smiling, and adjust the valves in the spring.

PS..any tips on replacing the oil filter housing gasket. If I get a warm day, I am going to take it on.

JCD