Honda BeAT 2020 Owner's Manual page 61

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
56
Crankcase Breather
Service more frequently when riding in rain, at
full throttle, or after the vehicle is washed or
overturned. Service if the deposit level can be
seen in the transparent section of the drain
tube.
If the drain tube overflows, the air filter may
become contaminated with engine oil causing
poor engine performance.