Moin! Last week I changed the chain tensioner because it was stuck in the “dead” position and created a terrifying rattle. Changed – rattles immediately away. Earlier I want to drive home from work, there is exactly the same noise again, from cold start to arrival. Cann’t it be that the part after a week and almost 300km already gives up the mind?! The oil level (Castrol 5w30) was and is ok, I control it right often. I can only explain it so that there must be another cause, why in such a short time two chain tensioners have broken – only which one?