Honda HSM1590i Manuel De L'utilisateur page 37

Engine oil
Inspection:
Check the engine oil level with the engine stopped and in a level
position.
Remove the oil filler cap/dipstick and wipe it clean.
Insert the oil filler cap/dipstick into the oil filler neck as shown, but do
not push it in, then remove it to check the oil level.
Refilling:
If the oil level is below the upper limit mark on the dipstick, fill with the
recommended oil to the upper limit mark. Do not overfill.
Change the oil if it is excessively contaminated or discolored. (Refer to
page 75 for the engine oil change interval and procedure.)
QUANTITY SPECIFIED:
OIL FILLER CAP/DIPSTICK
RECOMMENDED OIL:
Use 4-stroke motor oil that meets or exceeds the requirements for API
service classification SE or later (or equivalent). Always check the API
service label on the oil container to be sure it includes the letters SE or
later (or equivalent).
SAE 5W-30 is recommended for general use.
Engine oil is a major factor affecting engine performance and
service life. Nondetergent oils and 2-stroke engine oils are not
recommended because of inadequate lubricating properties.
Running the engine with insufficient oil can cause serious engine
damage.
Reinstall the oil filler cap/dipstick and push it in securely.
34
1.1 L (1.2 US qt, 1.0 lmp qt)
UPPER
LIMIT
MARK
LEVEL GAUGE
AMBIENT TEMPERATURE