The 2018 Honda Odyssey primarily requires SAE 0W-20 synthetic motor oil for its 3.5-liter V6 engine. If 0W-20 isn’t available, you can use a high-quality 5W-20 synthetic temporarily, but you should return to 0W-20 as soon as possible.
Recommended oil type and viscosity
The following points summarize the recommended oil type and viscosity for the Odyssey's engine:
- Primary specification: SAE 0W-20 synthetic motor oil.
- Alternate (temporary) option: SAE 5W-20 synthetic if 0W-20 is not on hand, used just as a stopgap.
- Oil should meet API service category SN or newer and ILSAC GF-5 (or newer) standards, and be appropriate for a gasoline engine.
Always ensure the oil you choose meets API SN or newer and ILSAC GF-5 or newer, and use a reputable brand or Honda-approved synthetic oil.
Oil capacity and change interval
The 3.5L V6 engine in the 2018 Odyssey holds about 5.0 quarts (approximately 4.7 liters) of oil with the filter. When replacing the oil, install a new filter and fill to the correct level, then recheck with the dipstick.
Oil change interval for normal driving with synthetic 0W-20 is typically every 7,500 miles (12,000 kilometers) or 12 months, whichever comes first. In severe driving conditions—such as frequent short trips, extreme climates, heavy towing, or lots of idling—follow the more frequent interval outlined in the owner's manual.
Checking oil level
To check the oil level: run the engine briefly to warm it, park on level ground, turn off, and wait a few minutes. Remove the dipstick, wipe it clean, reinsert fully, remove again, and read the level. If the level is low, add the same viscosity oil until it reaches the full mark.
Summary
In short, the 2018 Honda Odyssey is designed to use 0W-20 synthetic oil as its primary specification, with 5W-20 synthetic as a temporary alternative if necessary. The engine holds about 5 quarts of oil, and typical change intervals are around every 7,500 miles or 12 months under normal driving, with more frequent changes under severe conditions. Always verify with the owner's manual or a Honda dealer for region-specific guidance and ensure the oil meets API SN or newer and GF-5 or newer.