The 2008 Acura MDX with the 3.5-liter V6 typically requires 5W-20 synthetic motor oil for normal driving conditions, with API SN or higher and ILSAC GF-5 or higher certification. The engine holds about 5 quarts of oil with a filter. Always confirm the exact specification in the owner's manual or on the oil fill cap.
In this article, we outline the standard oil recommendation for the MDX, acceptable viscosity options, and practical guidance for choosing the right oil for your vehicle and climate.
Recommended oil specifications
Key details to guide your oil choice are summarized below.
- Viscosity: 5W-20 is the standard specification for normal operation.
- Oil type: Synthetic motor oil is recommended; high-quality conventional oil may be acceptable if synthetic is not available, but synthetic is preferred.
- Certifications: Look for API SN or higher and ILSAC GF-5 (or newer) certification on the bottle.
- Capacity: The engine holds about 5 quarts of oil with a filter; always recheck with the dipstick after pouring to bring to the proper level.
- Brand guidance: Use Honda/Acura-approved oil brands or other reputable brands that meet the above specs.
In short, matching 5W-20 synthetic oil to API SN and GF-5 standards, in the approximate 5-quart capacity, will keep the MDX running smoothly.
Climate and viscosity alternatives
Under certain conditions, the owner's manual permits a different viscosity. Consider the following guidance.
- Alternative viscosity: 5W-30 may be used in hotter climates or if 5W-20 is unavailable, but confirm the exception in your manual.
- Certification remain unchanged: Even in alternative viscosities, oil must meet API SN or higher and GF-5 or newer.
- Consult the manual cap: The oil fill cap on the engine or the owner’s manual will confirm the allowable viscosities for your specific vehicle.
Conclusion: While 5W-20 synthetic is the standard choice, 5W-30 is an acceptable alternative in certain climates or circumstances as specified by Acura.
Summary
For a 2008 Acura MDX, the typical requirement is 5W-20 synthetic oil that meets API SN and ILSAC GF-5 standards, with about 5 quarts of capacity. Always verify the exact spec in the owner's manual or on the oil fill cap, and consider climate-specific adjustments as needed.


