My '88 300E has a little over 135,000 miles on her. The project started with the goal of stopping the leaks. In order to get to them, the engine pretty much had to come apart, so while it was in pieces, I thought I should replace the guides and rails which also lead to the timing chain. The chain looked great, the inner guide rail was worn, but could have stayed in there; the outer guide rail looked pretty good (very little wear). The timing components probably didn't need to be changed, but for the cost (under $28) I felt compelled to do it while the engine was torn apart. BTW Mateo, I like your selection of cars listed with your post
