2026-07-22 · 5 min read
Mercedes-Benz E-Class — 漏油问题

E-Class Oil Leak Sources
- W212 M272: camshaft cover gaskets, oil cooler adapter seal — drops onto exhaust causing smoke
- W212 M274: balance shaft seal, valve cover rear corner leak
- W213 M264: oil separator hose and crankcase breather — causes rough idle if blocked
Repair Cost
- Oil cooler adapter seal
- Valve cover gasket
- Balance shaft seal
