The short answer: SAE 0W-20 full-synthetic motor oil. The 2018 Odyssey’s 3.5-liter V6 requires 0W-20 and uses about 5.6 quarts of oil with a filter for a standard change.
In this guide, we lay out the official specifications and practical tips to help you pick the right oil, understand capacity, and perform a change with confidence.
Oil type and viscosity
The Odyssey specifies SAE 0W-20 viscosity for the 3.5L V6. Use a full-synthetic oil that meets API service SN or newer and ILSAC GF-5 or newer. Honda Genuine 0W-20 is the common recommended option, though equivalent oils meeting Honda's standards are acceptable.
Key qualifications to look for when shopping for oil:
- Viscosity: SAE 0W-20
- Type: Full synthetic oil meeting API SN or newer and ILSAC GF-5 or newer
- Certification/source: Honda Genuine 0W-20 or equivalent meeting Honda's standards
Using oil that matches these specs helps ensure proper lubrication, cold-start protection, and long-term engine wear performance.
Oil capacity and change notes
The 2018 Odyssey holds about 5.6 quarts (5.3 liters) of oil with the filter during a typical oil change. After filling, run the engine, then recheck the level and top off if needed to reach the full mark on the dipstick.
Summary
For a 2018 Honda Odyssey, use SAE 0W-20 full-synthetic oil, about 5.6 quarts with a filter, and ensure the oil meets API SN or newer and ILSAC GF-5 or newer. Stick to Honda’s specification to maintain performance and warranty coverage.