2021 HONDA INSIGHT fuel additives

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Page 559 of 687

HONDA INSIGHT 2021  Owners Manual (in English) 557
Driving
Refueling
Fuel Information
■Fuel recommendation
Use of a lower octane gasoline can cause a  persistent, heavy metallic knocking noise 
that can lead to engine damage.
■Top tier deterge

Page 576 of 687

HONDA INSIGHT 2021  Owners Manual (in English) 574
uuMaintenance Under the Hood uRecommended Engine Oil
Maintenance
Recommended Engine Oil
Use a genuine engine oil or another commer cial engine oil of suitable type and 
viscosity (for the ambient

Page 581 of 687

HONDA INSIGHT 2021  Owners Manual (in English) 579
uuMaintenance Under the Hood uCooling System
Continued
Maintenance
Cooling System
This coolant is premixed with 50% an tifreeze and 50% water. Do not add any 
straight antifreeze or water.
We reco

Page 583 of 687

HONDA INSIGHT 2021  Owners Manual (in English) 581
uuMaintenance Under the Hood uInverter Coolant
Maintenance
Inverter Coolant
This coolant is premixed with 50% an tifreeze and 50% water. Do not add any 
straight antifreeze or water.
We recommend