2026-07-22 · 5 min read
Mercedes GLC Oil Leak Problems Malaysia — X253
GLC X253 oil leaks: M274 valve cover and oil cooler adapter seal common culprits. Early detection prevents secondary damage. Malaysia workshop diagnosis and repair RM 350–1,200.
GLC Oil Leak Common Points
GLC X253 M274 shares many oil leak failure points with the C-Class W205. The most common are the valve cover gasket at the rear of the engine and the oil cooler adapter seal which sits between the engine block and oil filter housing. Drips from the adapter seal land on the 9G-Tronic bell housing and are often mistaken for gearbox leaks.
Repair Cost
- Valve cover gasket: RM 350–550
- Oil cooler adapter seal: RM 400–700