I have a 1975 230 with 112,000 miles. I purchased it a month ago. Thanks to the post on this site I had my valves adjusted and my timing chain checked. It need to be changed so i had it done also. Total cost 310.00. The car drives great and I now feel much better every time I hit the gas pedal. I went to a independent Mercedes shop. I recommend unless your loaded try and find a good independent guy. Good Luck.