Thank you for taking the time to walk us through the process of changing the timing chain. I have a 1983 300SD and to my knowledge have never done this. It has 260,000 miles on it and i have owned it for the last 50,000+. The person before me owned it for at least 100,000 miles and never changed the chain. The car runs great, starts up great in cold weather and i get about 30mpg. I have no problems with it. How will I know if my chain needs replacement and is the same procedure used on a deisel?