2021 HONDA ODYSSEY fuel additives

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Page 663 of 787

HONDA ODYSSEY 2021  Owners Manual (in English) 661
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 685 of 787

HONDA ODYSSEY 2021  Owners Manual (in English) 683
uu Maintenance Under the Hood uEngine Coolant
Continued
Maintenance
Engine Coolant
This coolant is premixed with 50% an tifreeze and 50% water. Do not add any 
straight antifreeze or water.
We rec