Honda RS150R 2019 Owner's Manual page 61

Adding Engine Oil
If the engine oil is below or near the lower
level mark, add the recommended engine oil.
P. 39, 106
2
1. Remove the oil fill cap/dipstick. Add the
recommended oil until it reaches the
upper level mark.
u Place your motorcycle on its centre
stand on a firm, level surface when
checking the oil level.
u Do not overfill above the upper level
mark.
u Make sure no foreign objects enter the
oil filler opening.
u Wipe up any spills immediately.
Engine Oil
2. Securely reinstall the oil fill cap/dipstick.
NOTICE
Overfilling with oil or operating with insufficient oil can
cause damage to your engine. Do not mix different brands
and grades of oil. They may affect lubrication and clutch
operation.
For the recommended oil and oil selection
guidelines, see "Maintenance
Fundamentals." P. 39
2
u Adding Engine Oil
57