Honda HSM1180i Manuel De L'utilisateur page 37

Engine oil
Inspection:
Place the snowblower on level ground with the engine stopped.
Remove the engine oil filler cap/dipstick and check whether the oil is
up to the upper limit.
Refilling:
If the level is low, fill the new oil up to the upper limit.
Change the oil if it is excessively contaminated or discolored. (Refer to
page 68 for the engine oil change interval and procedure.)
QUANTITY SPECIFIED: 1.1 (1.2 US qt , 1.0 Imp qt)
ENGINE 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.
Tighten the oil filler cap/dipstick securely.
32
UPPER
LIMIT
AMBIENT TEMPERATURE