BMW Z4 Roadster Owner's Handbook Manual page 298

MOBILITY
Viscosity classes
SAE 0W-40.
SAE 5W-40.
Viscosity classes with a high viscosity grade can
increase fuel consumption.
Additional information on suitable oil specifica‐
tions and viscosity classes of engine oils can be
obtained from a Service Partner of the manufac‐
turer or another qualified Service Partner or a
specialist workshop.
Oil change
NOTE
Engine oil not changed in time can lead to in‐
creased engine wear and thus engine damage.
There is a danger of damage to property. Do
not exceed the service date indicated in the ve‐
hicle.
The manufacturer of the vehicle recommends
having the engine oil changed by a Service Part‐
ner of the manufacturer or another qualified
Service Partner or a specialist workshop.
Coolant
General
Coolant is a mixture of water and an additive.
Not all commercially available additives are suita‐
ble for the vehicle. Information regarding suitable
298
Service products
additives is available from a Service Partner of
the manufacturer or another qualified Service
Partner or a specialist workshop.
Safety notes
If the cooling system is opened when the en‐
gine is hot, coolant can escape and cause
scalding. There is a danger of injury. Only open
the cooling system when the engine has
cooled down.
Additives are harmful to health and incorrect
additives can damage the engine. There is a
danger of injury and damage to property. Do
not allow additives to come into contact with
clothing, skin or eyes, and do not swallow them.
Only use suitable additives.
Coolant level
General
Vehicles with a petrol engine have two cooling
circuits. Always check the coolant levels of both
coolant tanks and top up if necessary.
The coolant level is shown by Min and Max
marks in the filler neck of the coolant tank.
Depending on the engine version, the coolant
tank is located on the right or left of the engine
compartment, see page 291.
Checking the coolant level
1.
2.
3.
4.
Online Edition for Part no. xxx - X/18
WARNING
WARNING
Allow the engine to cool down.
Open the bonnet, see page 292.
Turn cap on coolant tank slightly anticlock‐
wise, then allow the pressure to escape.
Open cap on coolant tank.