The 2018 Honda Odyssey with the 3.5-liter V6 uses 0W-20 full-synthetic motor oil. The engine capacity is roughly 4.5 quarts with a filter, and you should use oil that meets API SN or newer and ILSAC GF-5 or newer. Always verify with your owner's manual or the under-hood oil specification label.
In this article, we break down the exact oil type, capacity, and practical tips for keeping your minivan’s engine well-lubed, including where to find the official specs and how to change the oil safely.
Oil Type and Viscosity
For the 2018 Odyssey's 3.5L V6, the recommended viscosity is 0W-20, and the oil should be full synthetic. This combination supports efficient cold-start performance, fuel economy, and engine protection in most driving conditions. Use oil that meets API SN or newer and ILSAC GF-5 or newer.
Key specifications at a glance:
- Viscosity: 0W-20
- Oil type: Full synthetic
- Engine: 3.5L V6
- Required standards: API SN or newer; ILSAC GF-5 or newer
- Typical capacity (with filter): About 4.5 quarts (4.3 L)
Using the correct oil helps maintain proper lubrication during startup and under load, and aligns with Honda’s engineering standards for the 2018 Odyssey.
Oil Capacity and Change Intervals
Oil capacity refers to how much oil the engine reservoir can hold, including oil in the filter. The 2018 Odyssey's 3.5L V6 takes roughly 4.5 quarts of oil when performing an oil change with the filter replaced. For the best results, use a brand and formulation that meets or exceeds the specified standards, and replace the oil filter with every change.
Before you change oil, know that the maintenance interval is typically guided by Honda’s Maintenance Minder system, which adjusts based on driving conditions. In normal driving with synthetic oil, many owners schedule changes around 7,500 miles (12,000 km) or according to the system’s reminders; frequent severe conditions (towing, short trips, extreme temperatures) may shorten this interval.
The information above provides the core capacity and interval guidance you should follow for a 2018 Odyssey.
Where to Find the Official Specs
The definitive source is your vehicle’s owner’s manual. Look for the oil specification section in the engine or maintenance chapter, and check the under-hood label near the engine bay for the recommended viscosity and API/ILSAC standards. If you’re unsure, you can also contact a Honda dealer or consult Honda’s official support resources for model-year-specific guidance.
Practical Tips for Changing Oil
When planning an oil change, prepare a high-quality 0W-20 full synthetic oil that meets API SN or newer and ILSAC GF-5 or newer, and replace the oil filter. Make sure to use the correct capacity, roughly 4.5 quarts, and check the oil level with the dipstick after a short idle post-change. Dispose of used oil responsibly at a certified recycling facility.
Summary
For a 2018 Honda Odyssey with the 3.5L V6, use 0W-20 full-synthetic motor oil, meeting API SN or newer and ILSAC GF-5 or newer. Expect a capacity of about 4.5 quarts with a new filter, and rely on Honda’s Maintenance Minder to guide change intervals. Always confirm specifics in your owner’s manual or on the under-hood label, and use the oil brand and formulation you trust for long-term engine health.