2010 Honda Insight Owner's Manual - Page 351
2010 Honda Insight Manual
Page 351 highlights
Adding Engine Oil ENGINE OIL FILL CAP Reinstall the engine oil fill cap, and tighten it securely. Wait a few minutes, and recheck the oil level on the engine oil dipstick. Do not fill above the upper mark; you could damage the engine. Recommended Engine Oil Oil is a major contributor to your engine's performance and longevity. Always use a premium-grade 0W-20 detergent oil displaying the API Certification Seal. This seal indicates the oil is energy conserving, and that it meets the American Petroleum Institute's latest requirements. Unscrew and remove the engine oil fill cap on the valve cover. Pour the oil slowly and carefully so you do not spill any. Clean up any spills immediately. Spilled oil could damage components in the engine compartment. 348 2010 Insight