LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2003 >> Odyssey V6-3.5L >> Repair and Diagnosis >> Maintenance >> Fluids >> Coolant >> Service Precautions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Coolant: Service Precautions


Always use Genuine Honda Antifreeze/Coolant. Using a non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fail.

For best corrosion protection, the coolant concentration must be maintained year-round at 50% minimum. Coolant concentrations less than 50% may not provide sufficient protection against corrosion or freezing. Coolant concentrations greater than 60% will impair cooling efficiency and are not recommended.

Do not use additional rust inhibitors or anti-rust products; they may not be compatible with the coolant.

Mixing green and red colored coolants is not recommended.