rough idiling
 

I have a 1987 Mercedes Benz 190E 2.3L 8v. My problem is when you start off in the car it runs fine for a very short distance, and then at a stop sign it starts to really rough idle. It will keep this low power up for a long ways till the car really warms up and then it will smooth out. It always does this. I have replaced the plugs the ignition cables new fuel pump. Can you give me any help on what it might be? The car only has 50K miles on it. Also, the car uses 2 quarts of oil in 1K miles. I have replaced the valve stem seals no help. What would cause an engine to use so much oil? Are they just a flute or what? Any help would be appreciated. Also, where can you find the cd's for this particular car?