What is best brand and type of coolant to use in 2000 Honda civic?

For a 2000 Honda Civic, the best coolant to use is a high-quality, ethylene glycol-based coolant that is compatible with Honda's specifications. Honda's own Genuine Honda Antifreeze/Coolant is highly recommended, as it is specifically formulated for Honda vehicles. Alternatively, you can use a universal coolant that meets the ASTM D3306 or D4985 standards, ensuring it is mixed with distilled water in a 50/50 ratio for optimal performance. Always check your owner’s manual for specific recommendations.