The Civic Si uses 0W-20 full-synthetic engine oil.
For modern Civic Si models, Honda specifies 0W-20 synthetic oil that meets API SP and ILSAC GF-6. This guide explains the recommended oil type, why it’s used, and practical maintenance tips to keep the turbocharged 1.5-liter engine running smoothly.
Oil specification and viscosity
Honda’s current Civic Si models (2017 and newer in the US market) require a 0W-20 synthetic oil. The 0W-20 grade supports cold-start protection, helps maximize fuel economy, and provides adequate high-temperature protection for the turbocharged 1.5-liter engine.
Options that meet Honda’s requirement include the following:
- 0W-20 full synthetic motor oil (Honda Genuine 0W-20 or equivalent) that meets API SP and ILSAC GF-6.
- Other brands’ 0W-20 full synthetic motor oil that meets API SP and ILSAC GF-6 and is approved for use in Honda engines.
In short, the essential requirement is a 0W-20 synthetic oil that meets current API/ILSAC specifications and is suitable for Honda engines. Always check your model year and manual to confirm the exact specification.
Oil capacity and change intervals
The 1.5-liter Civic Si engine holds roughly 3.2 quarts (about 3.0 liters) of oil with a full filter change. This capacity can vary slightly by year and whether a different oil filter is used, so consult the owner's manual for the exact figure.
Change intervals and maintenance are guided by Honda’s Maintenance Minder system. Under normal driving, oil changes are typically scheduled every 7,500 miles (12 months is a general cap), but severe driving conditions can shorten this interval. Use the dash warning to guide you between services and always replace the oil filter when changing the oil.
- Capacity: approximately 3.2 quarts (3.0 liters) with filter.
- Typical change interval: follow the Maintenance Minder; commonly around 7,500 miles under normal driving, with shorter intervals under severe conditions.
Always verify with your specific year/model's manual and the vehicle's maintenance minder for the exact numbers and schedule.
Practical maintenance tips
To ensure optimal performance and protection for the Civic Si’s turbocharged engine, follow these practical tips:
- Use 0W-20 synthetic oil from a reputable brand that meets API SP and ILSAC GF-6, preferably Honda Genuine when possible.
- Do not switch to a different viscosity unless the manual explicitly allows it for your climate and driving style.
- Change the oil and filter at the recommended interval, and reset the maintenance minder if required after service.
- Keep an eye on oil level between changes and address any leaks or consumption issues promptly.
In summary, sticking to 0W-20 synthetic oil and adhering to scheduled changes keeps the Civic Si’s engine protected and efficient.
Summary
The Civic Si requires 0W-20 full-synthetic engine oil for current models. Choose a reputable brand that meets API SP and ILSAC GF-6, with the option of Honda Genuine 0W-20. The typical capacity is about 3.2 quarts, and maintenance Minder will guide changes, usually around 7,500 miles under normal conditions, with adjustments for severe driving. Always consult the owner's manual for your exact year and model for precise specifications and intervals.