Honda WDP30X Owner's Manual page 37

4. Screw in the oil filler cap/dipstick securely.
OIL
FILLER/DIPSTICK CAP
TOPOFOIL /
P
FILLER NECK
Engine Oil Recommendations .
Oil is a major factor affecting performance and service life. Use
4-stroke automotive detergent oil.
AMBIENT TEMPERATURE
SAE 1 OW-30 is recommended for general use. Other viscosities
shown in the chart may be used when the average temperature in
your area is within the recommended range.
The SAE oil viscosity and service classification are in the API label on
the oil container. Honda recommends that you use API SERVICE
category SH or SJ oil with the ILSAC "starburst" certification mark
displayed on the container.
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