The 2018 Honda Civic 1.8L engine typically requires about 3.7 quarts (3.5 liters) of engine oil for a full change, including the oil filter. Always verify the exact figure in your owner's manual and use Honda’s recommended viscosity.
The 1.8-liter engine used in some Civic trims from that year is serviced with a standard oil capacity, but exact amounts can vary slightly by market and whether the filter is replaced. For most climates, Honda recommends a synthetic 0W-20 oil. The following notes cover capacity, viscosity, and service intervals to help you plan an oil change.
Oil capacity and recommendations
Before proceeding with an oil change, these are the key values and guidelines you should know for the 1.8L Civic engine.
- Engine oil capacity with filter: 3.7 quarts (3.5 liters).
- Recommended viscosity: 0W-20 synthetic oil for most climates and typical driving.
- Oil filter: Use a genuine Honda oil filter or an equivalent OEM-quality filter when replacing the filter.
- Oil change interval: Rely on the vehicle’s maintenance minder; typical guidance is about 5,000–7,500 miles (8,000–12,000 km) under normal driving, with shorter intervals under severe conditions.
- Filling and checking: After draining and replacing the filter, add oil gradually to reach the full level on the dipstick, then recheck once the engine is warmed and runs for a moment.
Dispose of used oil properly and recycle the old filter according to local regulations. Keeping the level accurate helps ensure proper lubrication and engine protection.
Climate and regional notes
In some regions, Honda may specify alternative viscosities for extreme temperatures; always consult your vehicle’s manual or a local Honda dealer if you’re unsure about the right specification for your climate or market. The information above represents common practice for many 2018 Civics with the 1.8L engine, but regional variations can apply.
Summary
For a 2018 Honda Civic with a 1.8L engine, plan to use about 3.7 quarts (3.5 liters) of oil with the filter installed, typically with 0W-20 synthetic oil. Confirm the exact capacity and recommended specifications in your owner's manual or with a Honda service advisor, especially if your car is in a market with different requirements. Following the recommended fill and maintenance interval helps maintain engine performance and longevity.