The 2018 Honda Civic LX uses 0W-20 full-synthetic motor oil.
Oil type and standards
In general, Honda specifies 0W-20 full-synthetic oil for the Civic LX, covering both the 2.0L engine used in the LX and the turbocharged options found in higher trims. The key requirement is that the oil meets current API and ILSAC standards.
Before listing the exact specs to look for when purchasing oil, here are the important guidelines to keep in mind:
- Viscosity: 0W-20
- Oil type: Full synthetic (Honda-recommended; synthetic blends are acceptable only if they meet the required specs)
- Standards: API SN or newer; ILSAC GF-5 or newer
- Branding: Honda Genuine or high-quality third-party oil that meets the above specifications
Using oil that conforms to these specifications helps ensure proper engine protection, efficiency, and warranty compliance.
Oil capacity and maintenance schedule
Beyond the oil type, it's useful to know roughly how much oil the engine holds and when to change it.
- Oil capacity (with filter): about 3.7 quarts (roughly 3.5 liters) for most Civic LX configurations
- Oil-change interval: typically around 7,500 miles under normal driving when using synthetic oil; more frequent changes may be advised in severe driving conditions
- Maintenance reminder: follow the vehicle’s maintenance minder and local recommendations for climate and driving conditions
In practice, always verify the exact interval in your owner’s manual or with a Honda service advisor, as mileage and conditions can affect timing.
Tips for buying and verifying the oil
When purchasing oil, confirm it is 0W-20, full synthetic, and meets API SN or newer and ILSAC GF-5. If in doubt, choose Honda Genuine 0W-20 or a reputable aftermarket oil that clearly lists those specifications on the label.
Summary
For a 2018 Honda Civic LX, use 0W-20 full-synthetic motor oil that meets API SN or newer and ILSAC GF-5 standards. Follow the maintenance minder for oil-change intervals (generally around 7,500 miles under normal driving) and consult the owner’s manual or a dealer for model-specific guidance and climate-related considerations.