Thanks...speaking of fuel etc. My tank was around half full and I felt the car pulling,
and uneasy shaking when stopped. By the time I got home I barely got it in the driveway
and it stopped. When I went back out to try and start it would shake and stop. So, I
put some of the Star Tron Enzyme treatment in. The next day it was a little better but still not safe to drive. So today, she was much improved and I got her to the gas station and filled her up. So I'll have to talk to my mechanic, but when I let my fuel fall below a half tank, I have problems. And check the fuel filter. I don't know if something besides my fuel filter should be cleaned but I'll see. She's fine with a full tank. And I should keep up with the star tron treatments. The directions say to add and ounce every fill up, which I hadn't done the last fill up. A word of caution to anyone who buys an old diesel Mercedes...