Honda PCX 150 Owner's Manual page 233

Maintenance Fundamentals
Brake Fluid
Do not add or replace brake fluid, except in an
emergency. Use only fresh brake fluid from a
sealed container. If you do add fluid, have the
brake system serviced by your dealer as soon as
possible.
NOTICE
Brake fluid can damage plastic and painted
surfaces.
Wipe up spills immediately and wash thoroughly.
Recommended brake fluid:
Honda DOT 3 or DOT 4 Brake Fluid or
equivalent
76
Recommended Coolant
Pro Honda HP Coolant is a pre-mixed solution
of antifreeze and distilled water.
Concentration:
50% antifreeze and 50% distilled water
A concentration of antifreeze below 40% will
not provide proper corrosion and cold
temperature protection.
A concentration of up to 60% will provide better
protection in colder climates.
NOTICE
Using coolant not specified for aluminium engines
or tap/mineral water can cause corrosion.
Crankcase Breathers
Service more frequently when riding in rain, at
full throttle, or after the scooter is washed or
overturned. Service if the deposit level can be
seen in the transparent section of the drain
tube.