Hello! today I made the long overdue oil change (5w40) with my 90s NG. I saw that he is “saut” along the timing belt and at the front corner of the oil pan – i.e. oily. But hardly need to refill oil…. My cousin (learned car mechanic) took a quick look at it: – valve cover seal heard – camshaftsimmering saut also Can you do the whole thing yourself? What would the repair cost in a (free) workshop? late to stop by the friendly one, so the question. Would change the timing belt + Wapu even if it is already disassembled. Thank you very much!