Many thanks!
I already decided that I was not going to let this guy

mess with my car. A too high price and a queasy feeling are both deal breakers for me. This was Miami Auto at NE 71st St and NE 4th Court, by the way.
I have the 1/2' rachet and the 27mm socket already as well as more than a couple of straight open end14mm wrenches. I suppose I could bend my own wrenches, as I have a propane torch. Perhaps a trip to the u-pik might embolden me. I think I saw a MB with the valve cover off, I just don't recall if it was a Diesel...
It is really great to have this forum to go to for info.
Has anyone replaced the valve seals? Should I try to do this myself?
The car doesn't smoke when I start it much. I suppose that there should not be any oil in the air filter canister, but there was a minimal amount.