Draining and replacing the working fluid of a manual transmission must be carried out at the intervals provided for by the vehicle maintenance regulations.
Use only Honda MTF gear oil designed for manual transmissions. If this oil is not available, then SJ group oil can be used as a temporary replacement (according to API classification) with viscosity SAE 10W-30 or 10W-40. However, it should be borne in mind that engine oils do not contain additives necessary for the reliable operation of the transmission. Prolonged operation of the transmission with engine oil can lead to difficulty shifting gears. Change the temporary oil to Honda recommended oil as soon as possible.