Mercedes-Benz SLR McLaren. Operator's Manual.

Technical data
Fuels, coolants, lubricants, etc.
Anticorrosion/antifreeze
Your vehicle contains a number of aluminum
parts. The use of aluminum components
in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be specifically
formulated to protect the aluminum
Anticorrosion/antifreeze quantity
382
parts. (Failure to use such anticorrosion/antifreeze
coolant will result in a significantly
shortened service life.)
Therefore, the following product is strongly
recommended for use in your vehicle:
Mercedes-Benz 325.0 anticorrosion/antifreeze
agent.
Approximately freeze protection
– 35°F (– 37°C) – 49°F (– 45°C)
Main cooling system 5.2 US qt (5.0 l) 5.8 US qt (5.5 l)
Low temperature cooling system 2.6 US qt (2.5 l) 2.9 US qt (2.75 l)
Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked. The coolant is also
regularly checked each time you bring your
vehicle to an authorized Mercedes-Benz
Center for service.