Opel MOKKA Owner's Manual page 288

286 Service and maintenance
The use of additional coolant
additives that intend to give additional
corrosion protection or seal against
minor leaks can cause function
problems. Liability for consequences
resulting from the use of additional
coolant additives will be rejected.
Washer fluid
Use only washer fluid approved for
the vehicle to prevent damage of
wiper blades, paintwork, plastic and
rubber parts. Consult a workshop.
Brake and clutch fluid
Over time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should
therefore be replaced at the specified
interval.
Use only brake fluid approved for the
vehicle. Consult a workshop.
AdBlue
Only use AdBlue to reduce the
nitrogen oxides in the exhaust
emission 3 174.