Hello together. Thoughtfully made by several threads in motor talk because of the sliding rails in the M 119 engine, and that these like to crumble I made my engine yesterday and determined the following. The engine is an M 119 E50 built in a W124 year 1992 , kilometer level 150000. So time to control all the time. After the opening the sliding rails looked like new, no Vrschlasses broken off etc. But because I wanted to install new ones, so the old ones out. Aut. Then it comes:beim entwicklung notice that the old ones were completely hardened, felt like glass and when opening the closures are broken off. Conclusion: a change certainly does not harm, is not too big a thing, and can extend the life of the engine. With an image of the old sliding rails.