Mercedes-Benz S 450 4MATIC Operator's Manual page 769

Technical data
Fuels, coolants, lubricants, etc.
Air conditioning system
Windshield washer
1
Use MB Windshield Washer Concentrate "MB SummerFit" and water for temperatures above freezing or MB Windshield Washer Concentrate "MB SummerFit" and
commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (
768
Model Capacity
All models
All models approx. 6.87 US qt (6.5 l)
Fuels, coolants, lubricants, etc.
R-134a refrigerant and special PAG
lubricant oil (never R-12)
MB Windshield Washer Concentrate
page 774).
1