Engine oil and filter
Match both the oil grade and specification to this engine. Check the refill conditions before buying oil, then use the dipstick to confirm the final level.
VerifiedProduct compatibility review in progress2021 Honda Civic / 4Dr · Automatic (AV-S7) · 4 cyl · 1.5 L · Turbo
Owner maintenance and common replacements
Factory intervals, fitment limits, tools, fluids, torque information, and common home-service searches.
← Back to specificationsConfiguration-specific service and fitment facts
These sourced values are shared by the specification sheet and the maintenance guides for this exact configuration.
- Engine oil viscosity
- SAE 0W-20 Verified
- Engine oil specification
- Honda Genuine Motor Oil or premium-grade detergent oil bearing the API Certification Seal VerifiedSynthetic oil is permitted with the API Certification Seal and specified viscosity. The manual does not require oil additives.
- Conditional engine oil refill
- Service-change amounts are separate from dry-engine capacity. Use the engine-specific filter-change quantity and recheck the dipstick after three minutes. Verified
- Oil drain plug torque
- 30 lb-ft Verified
- Coolant specification
- Honda Long Life Antifreeze/Coolant Type 2, premixed 50/50 VerifiedDo not add straight antifreeze or water. For sustained temperatures below -35 C (-31 F), consult a dealer about the required concentration.
- Brake fluid
- Honda Heavy Duty Brake Fluid DOT 3 VerifiedSealed DOT 3 or DOT 4 fluid is temporary only if the specified fluid is unavailable. Do not use DOT 5; restore Honda DOT 3 as directed.
- Engine oil refill with filter
- 3.7 US qt VerifiedService oil change with filter, not dry-engine capacity.
- Engine oil refill without filter
- 3.4 US qt Verified
- CVT fluid specification
- Honda HCF-2 VerifiedPublished CVT change quantity: 3.7 L; this is not the total dry-transmission capacity. Owner service directions are on printed page 533.
- Engine coolant capacity
- 5.4 US qt VerifiedPublished change capacity includes the 0.75 L (0.2 US gal) remaining in the reserve tank; do not interpret it as a top-up or additional amount to pour into an unemptied reservoir.
- Spark plug specification
- NGK ILZKAR8H8S Verified
- Oil filter applications
- WIX 57356 VerifiedReviewed only for the eight explicitly assigned 2021 Civic sedan, hatchback and Type R configurations with their recorded engines and transmissions. The Type R match comes from its separate K20C1 row. WIX displacement labels are retained as printed and do not change Honda displacement. Use one standard 57356 filter and follow Honda service intervals.
12-volt battery
Inspect the case, hold-down and terminals. Confirm dimensions, polarity and venting before selecting a replacement battery.
VerifiedBrake fluid and inspection
Check the reservoir and inspect any low level, warning light or changed pedal feel before driving. Repeated topping-up is not a repair.
VerifiedCabin air filter
Check reduced ventilation airflow and inspect the cabin filter where fitted. Follow the year-specific instructions for access and installation direction.
VerifiedCVT fluid
Use Honda HCF-2 for these sedan CVTs; do not mix other fluids. The owner’s manual directs a dealer to check and replace the CVT fluid and says not to attempt the fluid check/change yourself.
VerifiedEngine air filter
Inspect the filter housing and replace the element on the applicable schedule, sooner in dusty use when the manual requires it.
VerifiedEngine coolant
Check the reservoir level with the engine cold and investigate repeated coolant loss. Coolant type and replacement procedure matter as much as capacity.
VerifiedScheduled chassis and owner inspections
Follow the exact model-year schedule and its special-use conditions. Inspect worn or damaged components and use the applicable service procedure for repairs.
VerifiedSpark plugs
Use the engine-specific plug type. Check the service schedule and inspect ignition faults before replacing parts.
VerifiedTires and rotation
Check cold pressures, tread wear and damage. Use the vehicle placard for the fitted tire size and load rather than the tire sidewall maximum.
VerifiedWiper blades and washer fluid
Replace damaged or streaking blades after checking that the glass and rubber are clean. Confirm the driver/passenger lengths and connector before ordering.
Verified