1984 380SE, 1983 300SD, 2002 C240
Has anyone had this problem before? After about 250 miles it will raise the level about 1/4 of an inch on dipstick. I have not started diagnosing it yet, just noticed it two weeks ago, and looking for a good starting point. The engine does not act like it is flooding and runs smooth with no noticeable smoke coming from tailpipe or rich smell. Any help would be appreciated!