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Mercedes-Benz/Mercedes-Benz GLC Coupe/漏油问题

2026-07-22 · 5 min read

Mercedes GLC Coupe Oil Leak Malaysia — C253/C254

GLC Coupe C253 M274 oil leaks: valve cover gasket and oil cooler adapter seal — same failure points as GLC X253. Drips from adapter seal land on 9G-Tronic bell housing. Malaysia fix RM 350–1,200.

GLC Coupe Oil Leak Points

Valve cover gasket — oil mist on engine top, burning smell; repair RM 350–600
Oil cooler adapter seal — oil drips down engine side onto transmission; repair RM 600–1,200

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