SL 280 R129

how long does such a sl 280 run when it is well preserved and is kept??? scrape at the 200tkm mark. is there certain things that are broken by default from a higher running power so 200tkm and upwards? do I have to reckon with something bigger?? or am I still in the “green area”? did the friend hear that so from 250tkm very much the light engine goes on and the transmission(5speed automatic in my case,are nevertheless installed from MJ 96,or??) slowly pushes to its limits i ch hope you can write me as much information as possible lg matias