Owner's Manual
Page 352
... you use Honda Motor Oil in your engine use a synthetic motor oil if it is the proper weight. Additives may use less fuel. 349 2010 Insight This special oil is formulated to help your vehicle for a conventional motor oil: it displays... the API Certification Seal and it meets the same requirements given for optimum engine protection. Adding Engine Oil The oil viscosity or weight is provided on the multiinformation display. You must follow the oil and filter change intervals...
... you use Honda Motor Oil in your engine use a synthetic motor oil if it is the proper weight. Additives may use less fuel. 349 2010 Insight This special oil is formulated to help your vehicle for a conventional motor oil: it displays... the API Certification Seal and it meets the same requirements given for optimum engine protection. Adding Engine Oil The oil viscosity or weight is provided on the multiinformation display. You must follow the oil and filter change intervals...