Mercedes-Benz 2006 CLS 500 Operator's Manual page 470

Anticorrosion/antifreeze quantity
Model
CLS 500
CLS 55 AMG
Approx. freeze protection
– 35°F (– 37°C) – 49°F (– 45°C)
6.0 US qt (5.7 l) 6.6 US qt (6.2 l)
7.0 US qt (6.55 l) 7.7 US qt (7.2 l)
Technical data
Fuels, coolants, lubricants etc.
469