2018 Honda Odyssey Oil Capacity, Weight, and Filter Guide

The 2018 Honda Odyssey takes exactly 5.7 US quarts (5.4 liters) of 0W-20 engine oil when performing an oil and filter change.

As an ASE-certified master technician, I regularly see fifth-generation Odysseys roll into the bay for routine maintenance. The 2018 redesign brought some excellent updates to Honda's flagship minivan, but when it comes to the engine, it relies on the familiar and reliable 3.5L EarthDreams V6. Keeping up with the correct fluid levels, oil weights, and exact torque specifications is critical to keeping this family hauler running well past the 100,000-mile mark.

Here is everything you need to know about changing the oil in your 2018 Honda Odyssey.

Quick Answer: Specs & Part Numbers

• Oil Capacity (with filter): 5.7 US quarts (5.4 L)
• Recommended Oil Weight: 0W-20
• Oil Specification: API Premium Grade (API SN, SP, or ILSAC GF-5 / GF-6A)
• OEM Oil Filter: Honda 15400-PLM-A02 (or 15400-PLM-A01)
• Aftermarket Oil Filters: Fram XG7317 (Ultra Synthetic), Wix 51356, Mobil 1 M1-110A

Capacity by Engine Option

For the 2018 model year in the North American market, Honda exclusively offered the Odyssey with one engine option across all trim levels (LX, EX, EX-L, Touring, and Elite).

Oil Change Interval

The 2018 Honda Odyssey utilizes Honda’s Maintenance Minder system, which calculates oil life based on engine operating conditions, temperature, speed, and trip lengths. An indicator light will display on the dashboard (Code "A" or "B") when it is time for service at 15% remaining oil life. However, if you prefer to track mileage:

• Normal Duty: Every 7,500 to 10,000 miles, or every 12 months (whichever comes first). This applies if most of your driving is highway cruising in moderate temperatures.
• Severe Duty: Every 3,000 to 5,000 miles, or every 6 months. Severe duty applies if you frequently make short trips (under 5 miles), idle extensively (common for minivans waiting at school pickups), drive in dusty conditions, or tow a trailer.

Drain Plug Torque & Crush Washer

• Drain Plug Torque: 29 lb-ft (39 Nm)
• Drain Plug Size: 17mm socket
• Crush Washer: 14mm aluminum washer (OEM Part # 94109-14000)

Technician Tip: Never reuse the aluminum crush washer. Reusing a flattened washer is the number one cause of slow oil pan leaks. Always place the flat side of the washer against the oil pan, and the slightly rounded side facing the bolt head. Do not overtighten the plug, as the aluminum oil pan threads can strip easily.

How to Change the Oil

1. Prepare the Vehicle: Park on a level surface, engage the parking brake, and raise the front of the vehicle safely using a jack and jack stands (or drive onto ramps).
2. Drain the Oil: Locate the 17mm drain plug on the passenger side of the oil pan. Place a drain pan underneath and remove the plug. Allow the oil to drain completely.
3. Replace the Filter: Locate the oil filter (accessed from underneath, near the passenger-side wheel well). Use an oil filter wrench to remove it. Lubricate the rubber gasket of the new filter with a dab of fresh oil. Install the new filter by hand until the gasket makes contact, then tighten it another 3/4 of a turn.
4. Reinstall Drain Plug: Install a new 14mm crush washer on the drain plug. Thread it in by hand to prevent cross-threading, then torque to exactly 29 lb-ft.
5. Refill: Remove the oil filler cap under the hood. Pour in exactly 5.7 quarts of 0W-20 engine oil.
6. Verify and Reset: Start the engine and let it run for a minute to fill the oil filter. Check underneath for any leaks. Turn off the engine, wait five minutes, and verify the oil level on the dipstick. Finally, reset the Maintenance Minder system via the dashboard display.

Common Issues & Tips for the 2018 Odyssey

• Direct Injection and Oil Dilution: The 3.5L EarthDreams V6 uses Direct Injection (DI). While very efficient, DI engines can sometimes suffer from mild fuel dilution, where trace amounts of gasoline bypass the piston rings and mix with the oil. If you do a lot of short-trip driving where the engine doesn't reach full operating temperature, change your oil closer to the 5,000-mile mark.
• Variable Cylinder Management (VCM): Honda's VCM shuts off cylinders during highway cruising to save fuel. In older generations, this was notorious for causing premature oil burning. The system is heavily refined in the 2018 model, but you should still check your oil level on the dipstick every 1,000 miles.
• Checking the Dipstick: Honda dipsticks can be notoriously tricky to read when the oil is fresh and clear. Always wipe it completely clean, re-insert it fully, and check both sides in good lighting. The level should fall between the upper and lower crosshatched marks.

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