2020 HONDA RIDGELINE fuel additives

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Page 479 of 591

HONDA RIDGELINE 2020  Owners Manual (in English) 477
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 499 of 591

HONDA RIDGELINE 2020  Owners Manual (in English) 497
uuMaintenance 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 reco