The 2018 Honda Odyssey with the 3.5-liter V6 engine requires about 5.7 quarts of engine oil for a full change with a new filter, using 0W-20 synthetic oil.
Official specifications
Honda’s owner manual for the 2018 Odyssey lists the engine oil capacity at 5.7 quarts (5.4 liters) when performing an oil change with the filter replaced. The recommended viscosity is 0W-20 full synthetic for typical conditions; some climates may allow 5W-20, but 0W-20 is the standard recommendation. Always consult the manual or a dealer if you’re unsure about your local conditions.
Oil grade and climate considerations
Use a high-quality 0W-20 full-synthetic oil to maximize protection and fuel efficiency. If your vehicle is in extreme heat or cold, verify with Honda’s guidance for any climate-specific recommendations.
Practical guidance for oil changes
When performing an oil change, replace the oil filter and pour the new oil gradually until the dipstick shows the full mark. Start the engine briefly to circulate the new oil, then turn it off and recheck the level, adding more if needed but avoiding overfill, which can harm engine seals and performance. The 5.7-quart figure assumes a new filter; using a different filter or aftermarket parts may slightly adjust the total required.
Tips for accuracy during service
Always verify the exact capacity on the vehicle’s service manual or on the filter packaging, and use the dipstick as the final check to reach the correct oil level after a change.
Additional considerations
Capacity can vary slightly due to filter size, engine wear, or regional service bulletins. If you’re performing maintenance under warranty or in a professional setting, follow the latest Honda documentation and, when in doubt, consult a certified technician.
Summary
For the 2018 Honda Odyssey with the 3.5L V6, plan to replace with about 5.7 quarts of engine oil when doing a full oil change with a new filter, using 0W-20 full synthetic oil. Always confirm with the owner’s manual and verify the final oil level with the dipstick after service.