The Civic Si’s 1.5-liter turbocharged engine takes about 4.4 quarts (roughly 4.2 liters) of engine oil when you perform an oil change with a new filter. If you don’t replace the filter, plan for around 4.0 quarts.
Oil capacity specifics
For practical planning, here is the quick breakdown of the oil amounts you’ll typically encounter during a standard oil change on this model, including and excluding the filter.
- Oil capacity with filter: 4.4 quarts (4.2 liters)
- Oil capacity without filter: about 4.0 quarts (approximately 3.8 liters)
In normal service, most technicians add a new filter and use the full capacity to reach the recommended level. If the filter isn’t replaced, you’ll be closer to the lower end of the range and should verify the level with the dipstick after letting the engine settle.
Oil type and maintenance notes
Recommended oil and viscosity
The Civic Si 1.5T typically calls for 0W-20 full-synthetic oil. Use a reputable brand that meets or exceeds API requirements and Honda’s specs, especially if the car has higher mileage or operates in extreme temperatures.
How to check and finalize the oil level
After draining old oil and installing a new filter, refill gradually and run the engine to operating temperature, then shut off and let it settle. Recheck with the dipstick and top up to the full mark if needed, avoiding overfill.
Additional maintenance context
Oil capacity figures can vary slightly by production run or regional recommendations, so it’s always best to confirm with the owner’s manual or a dealer’s service bulletin for your exact vehicle. The figures above reflect typical specifications for the 2019 Civic Si 1.5T.
Summary
The 2019 Honda Civic Si 1.5T uses about 4.4 quarts of engine oil with a new filter, with roughly 4.0 quarts if the filter isn’t replaced. Use 0W-20 full-synthetic oil and verify the final level with the dipstick after an oil change. When in doubt, consult the owner’s manual or a certified Honda service professional for the most accurate guidance.