2018 HONDA RIDGELINE fuel additives

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Page 514 of 623

HONDA RIDGELINE 2018  Owners Manual (in English) 512
Driving
Refueling
Fuel Information
■Fuel recommendation
Use of lower octane gasoline can cause occasional metallic knocking noise in the 
engine and will result in decreased engine performance.

Page 535 of 623

HONDA RIDGELINE 2018  Owners Manual (in English) 533
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.
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