BMW 650i Convertible 2007 - Manual (Page 211)

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You can also call BMW of North America at
1-800-831-1117 or visit the website at
www.bmwusa.com to obtain this information.
Do not use oil additives; under some cir-
cumstances, they can damage your
engine. <
Viscosity grades
The viscosity is a measure of the thickness of
the oil and is specified in SAE grades.
The choice of the right SAE grade is based on
the climatic conditions in the region in which
you normally drive your BMW.
Approved oils belong to the SAE grades
5W-40 and 5W-30.
<
These oils can be used for driving at all outside
temperatures.
Coolant
Do not open the cooling system when the
engine is hot. Escaping coolant can cause
burns. <
Coolant consists of water and coolant additive.
Not all commercially available additives are suit-
able for your BMW. Ask your BMW center for
suitable additives.
Only use suitable additives, otherwise
engine damage may result. The additives
present a health hazard. <
Always observe all applicable environ-
mental laws and regulations when dis-
posing of used coolant additives. <
Checking coolant level
1. Allow the engine to cool.
2. Turn the cap of the expansion tank counter-
clockwise to allow any accumulated pres-
sure to escape, then continue turning to
open.
3. The coolant level is correct when it lies
between the MIN and MAX mark, also refer
to the drawing next to the filler neck.
4. If the coolant is low, slowly add coolant up to
the specified level – do not overfill.
5. Turn the cap until it clicks.
6. Have the reason for the coolant loss elimi-
nated as soon as possible.
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