I think I need new valve seals or something...car burns approx 1 quart 10w40 oil per week...car is driven relatively hard...often around 4000rpms...no blue smoke or smoke out exhaust...however, with air filter off, a reasonable amount of blue smoke will come through throttle body and PCV valve when revved. Car also hard to start occasionally when cold.

Chris
H20mobius@aol.com
1984 190E 2.3 8 valve 85k miles. 5 speed

The valve stem seals on early M102 engines lasted only 75-100k miles, also the valve guides wear quickly. Replacement parts are much better. If the compression is good try new seals.