Mercedes-Benz GLK-Class: Please bear the following in mind
The engine oils are matched to the performance of Mercedes-Benz engines and service intervals. You should therefore only use engine oils and oil filters that are approved for vehicles with maintenance systems.
For a list of approved engine oils and oil filters, consult an authorized Mercedes-Benz Center or go to the Internet site http://www.mbusa.com (USA only).
Never use engine oil or an oil filter of a specification other than is necessary to fulfill the prescribed service intervals. Do not change the engine oil or oil filter in order to achieve longer replacement intervals than those prescribed. You could otherwise cause engine damage or damage to the exhaust gas aftertreatment. Follow the instructions in the service interval display regarding the oil change. Otherwise, you may damage the engine and the exhaust gas aftertreatment.
The table shows which engine oils have been approved for your vehicle.
MB approval is indicated on the oil containers.
Additives
Do not use any additives in the engine oil. This could damage the engine.
Engine oil
...Engine oil viscosity
Viscosity describes the flow characteristics of a fluid. If an engine oil has a high viscosity, this means that it is thick; a low viscosity means that it is thin. Select an engine oil with an SA ...See also:
Steering
...
Gasoline for cleaner air
Your use of gasoline with detergent
additives will help prevent deposits from
forming in your engine and fuel system.
This helps keep your engine in tune and
your emission control system workin ...
Engine compartment, overview
The appearance of the engine compartment
may vary depending on engine model.
1 Coolant expansion tank
2 Power steering fluid reservoir
3 Engine oil dipstick
4 Radiator
5 Filler cap for engine ...