2010 Honda Insight Owner's Manual - Page 356

Engine Coolant Adding Engine Coolant Always use Honda Long-life Antifreeze/Coolant Type 2. This coolant is pre-mixed with 50 percent antifreeze and 50 percent distilled water. Never add straight antifreeze or plain water. If Honda antifreeze/coolant is not available, you may use another major-brand non-silicate coolant as a temporary replacement. Make sure it is a high-quality coolant recommended for aluminum engines. Continued use of any non-Honda coolant can result in corrosion, causing the cooling system to malfunction or fail. Have the cooling system flushed and refilled with Honda antifreeze/coolant as soon as possible. If you regularly drive your vehicle under severe conditions in very low temperature (under 31°F, 35°C), a higher concentration of coolant should be used. Consult your Honda dealer f or more inf ormation on the proper coolant. RESERVE TANK Maintenance If the coolant level in the reserve tank is at or below the MIN line, add coolant to bring it up to between the MIN and MAX lines. Inspect the cooling system for leaks. CONTINUED 353 2010 Insight