2026-07-22 · 5 min read
Mercedes CLS Coolant Service Malaysia — C218/C257
CLS uses MB 325.6 coolant across all generations. C218 M276 uses dual cooling circuits; C257 M256 with EQ Boost adds a third electric pump. Change every 3 years or 60,000 km. Malaysia cost RM 250–450.
CLS Coolant Service
- MB 325.6 across all generations — change every 3 years or 60,000 km
- C257 M256 EQ Boost adds electric cooling pump — additional circuit to inspect
- Malaysia cost: RM 250–450
Mercedes Coolant — Malaysia Maintenance
Mercedes-Benz uses MB 325.6 coolant (pink/blue OAT type) — do NOT mix with conventional green coolant, which causes corrosion in the aluminium engine and coolant system. Check the coolant level monthly in Malaysia's heat. Flush every 3 years or 60,000 km. For turbocharged models, let the engine idle for 2 minutes before shutdown after heavy use — this allows the coolant to carry heat away from the turbo bearings. Overheating is uncommon on modern Mercedes but can occur if the coolant level drops and is not checked.