Mercedes-Benz GLC — 机油指南

• X253 M274 (GLC 200/250/300): MB 229.51 — 5W-30 full synthetic
• X254 M254 (GLC 200/300 mild hybrid): MB 229.6 — 0W-20 full synthetic

Always verify the oil spec before topping up. The M254 in the X254 integrates a 48V starter-generator with the engine oil circuit — using any oil other than MB 229.6 risks lubrication incompatibility. Cost at 4M Car Care for full oil + filter change.