Fluid · Coolant
Coolant
for 2011 Mercedes-Benz S550 W221 5.5L M273 V8 (382 hp) · RWD
Fluid Type
MB 325.5 coolant concentrate mixed 50/50
Spec: MB 325.5
Capacity
14.5qt
13.72 L
Drain & Refill
14.5 qt
13.72 L
Change Interval
150,000 mi
241,350 km
Data quality
Book-style estimate
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Notes
Total system capacity including turbocharger cooling. M278 uses newer spec coolant. Use approved MB antifreeze only