Regarding Mb 107 injectors , I am seeking a little advice re when to service or replace the injectors on a 1982 500SL.

My vehicle has 250KM and runs fine, however I would like know if I should plan on injector replacement in due course, as my Indi commented that my car could use new ones to make it run better considering the milage.

Do injectors wear , what symptoms are evident if they are worn , is my indi pulling the wool over my eyes .

Any comments greatly appreciated .

Den Downunder .