The 2005 Acura RSX Type-S requires 5W-30 synthetic motor oil. It should meet API SN/SM/SL or newer standards and ILSAC GF-4/5 (or newer). Use a high-quality synthetic or synthetic-blend oil and verify level with the dipstick during every oil change.
Oil grade and specifications
Choosing the right oil involves matching viscosity, quality standards, and compatibility with the RSX Type-S’s K-series engine. The information below highlights what to look for when shopping for oil.
Before you pick oil, note these essential guidelines:
- Viscosity: 5W-30 is the standard recommendation for most climates and driving conditions on the RSX Type-S.
- Oil type: Synthetic motor oil (full-synthetic or high-quality synthetic blend) is preferred for better wear protection and temperature stability.
- Specs: Oil should meet API SN/SM/SL or newer and ILSAC GF-4/5 or newer compatibility; many brands list this on the bottle.
- Capacity: With filter, the engine takes roughly 4.4–4.5 quarts; confirm the exact figure for your vehicle and filter size and always recheck the level with the dipstick after filling.
Concluding note: When in doubt, choose a reputable 5W-30 synthetic oil that meets the API and ILSAC specs listed above, and consider Honda Genuine Motor Oil or a widely certified substitute from a trusted brand.
Maintenance schedule and oil changes
Oil change intervals depend on whether you’re using conventional or synthetic oil, as well as driving conditions. The schedule below provides a general framework for the RSX Type-S.
Before you follow a maintenance interval, consider your driving habits and climate:
- Conventional oil: typically change every 3,750–5,000 miles (or every 6 months, whichever comes first).
- Synthetic or synthetic-blend oil: commonly extend to about 7,500–10,000 miles (or 12 months, depending on conditions).
- Severe service or extreme conditions (short trips, hot climates, heavy loads): follow the shorter end of the range or consult your manual for OEM guidance.
Concluding note: In practice, many RSX Type-S owners service around every 5,000 miles or 6 months with conventional oil, and every 7,500–10,000 miles with synthetic, adjusting for how you drive and climate.
Where to buy and how to verify specifications
Look for bottles labeled 5W-30 that meet API SN/SM/SL or newer and ILSAC GF-4/5 or newer. If you’re unsure, ask a parts specialist or consult the owner’s manual to confirm the exact spec for your VIN and market. Honda Genuine Motor Oil 5W-30 is a common, reliable option, and many third-party brands offer equivalent synthetic formulations that meet the same specs.
Summary
For a 2005 RSX Type-S, use 5W-30 synthetic motor oil that conforms to API SN/SM/SL or newer and ILSAC GF-4/5 or newer. The approximate oil capacity with filter is around 4.4–4.5 quarts. Follow the maintenance schedule appropriate to your oil type and driving conditions, and verify oil level with the dipstick after each fill. When in doubt, consult the owner’s manual or a trusted technician.