Mercedes-Benz 2008 M-Class Operator's Manual page 525

Technical data
Fuels, coolants, lubricants
Fuel tank
including a reserve of All except
including a reserve of ML 63 AMG
Air conditioning system
Windshield washer system and
headlamp cleaning system*
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 (
524
Model Capacity
All models 25.1 US gal (95.0 l)
approx. 3.5 US gal (13.0 l)
ML 63 AMG
approx. 4.0 US gal (15.0 l)
All models
All models 8.1 US qt (7.7 l)
Fuels, coolants, lubricants etc.
Gasoline engine:
Premium unleaded gasoline
Minimum Posted Octane 91
(Avg. of 96 RON/86 MON)
Diesel engine:
ULTRA-LOW SULFUR HIGHWAY DIESEL FUEL
(15 ppm SULFUR MAXIMUM)
R-134a refrigerant and special PAG lubricant
oil (never R-12)
MB Windshield Washer Concentrate
1
page 530).