The Acura TSX generally uses 5W-20 synthetic engine oil (API SN or newer), with an approximate capacity of 4.5 quarts including the filter. Always consult your owner's manual for your exact year and engine variant.
Oil grade and capacity across TSX generations
To help owners navigate variations between model years, here are the core specifications most TSX models share. The standard specification across its two generations is a 5W-20 synthetic oil that supports the 2.4-liter i-VTEC powerplant.
- Viscosity: 5W-20
- Oil type: Synthetic (fully synthetic recommended; API SN or newer)
- Capacity: Approximately 4.5 quarts with oil filter
- Notes: Always verify the exact requirement for your year and engine code (K24A2 or K24Z3) using the owner's manual or under-hood information label
In summary, the TSX’s standard oil specification centers on 5W-20 synthetic with a typical fill of about 4.5 quarts. Year-by-year variances are small but can exist, so cross-check the manual for your vehicle’s exact needs.
Why this matters for maintenance
Using the correct viscosity and a high-quality synthetic oil helps protect the TSX’s i-VTEC engine, supports optimal fuel efficiency, and extends intervals between changes. Many owners follow a routine of changing the oil every 5,000–7,500 miles, depending on driving conditions and the oil brand used.
Bottom line tips for TSX oil care
Always prioritize the model-year-specific guidance from the owner's manual. If you’re performing an oil change yourself, ensure you use the correct filter, fully synthetic 5W-20 oil, and dispose of the old oil responsibly. When in doubt, consult a certified Acura technician or a trusted service center.
Summary
For most Acura TSX models, the recommended engine oil is 5W-20 synthetic (API SN or newer), with a typical capacity of about 4.5 quarts including the filter. Verification for your exact year and engine variant is advised, as small differences can exist between early and late production runs. Regular, properly-timed oil changes are key to preserving the life and performance of the TSX’s 2.4-liter i-VTEC engine.