2018 Ford Flex Oil Type & Capacity: 5W-30 (6.0 quarts)
The 2018 Ford Flex takes 5W-30 motor oil — 6.0 quarts with a filter change, per the factory service manual.
Factory-spec answer
5W-30 — 6.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 3.5L — Limited, 3.5L Eng VIN 8, AWD, 3.5L Eng | MOTORCRAFT SAE 5W-30 Premium Synthetic Blend Motor Oil or Optional: MOTORCRAFT SAE 5W-30 Full Synthetic Motor Oil | 6.00 QTS. | — | — |
| 3.5L — Limited, 3.5L Eng VIN 8, FWD, 3.5L Eng | MOTORCRAFT SAE 5W-30 Premium Synthetic Blend Motor Oil or Optional: MOTORCRAFT SAE 5W-30 Full Synthetic Motor Oil | 6.00 QTS. | — | — |
| 3.5L — Limited, 3.5L Eng VIN T, 3.5L Eng | MOTORCRAFT SAE 5W-30 Premium Synthetic Blend Motor Oil or Optional: MOTORCRAFT SAE 5W-30 Full Synthetic Motor Oil | 6.00 QTS. | — | — |
| SE — 3.5L Eng | MOTORCRAFT SAE 5W-30 Premium Synthetic Blend Motor Oil or Optional: MOTORCRAFT SAE 5W-30 Full Synthetic Motor Oil | 6.00 QTS. | — | — |
| SEL, AWD — 3.5L Eng | MOTORCRAFT SAE 5W-30 Premium Synthetic Blend Motor Oil or Optional: MOTORCRAFT SAE 5W-30 Full Synthetic Motor Oil | 6.00 QTS. | — | — |
| SEL, FWD — 3.5L Eng | MOTORCRAFT SAE 5W-30 Premium Synthetic Blend Motor Oil or Optional: MOTORCRAFT SAE 5W-30 Full Synthetic Motor Oil | 6.00 QTS. | — | — |
More factory specs & repair guides for your Flex
🛞 2018 Ford Flex Tire Size & Pressure →🌧️ 2018 Ford Flex Wiper Blade Sizes →💡 2018 Ford Flex Light Bulb Sizes →📖 2018 Ford Flex Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
13.7 quarts (12.96 L) — MOTORCRAFT Orange Antifreeze/Coolant Prediluted. Add the coolant type originally equipped in the vehicle. Indicates only approximate dry fill capacity. Some applications may vary.
Frequently asked questions
What type of oil does a 2018 Ford Flex take?
The 2018 Ford Flex takes 5W-30 motor oil (MOTORCRAFT SAE 5W-30 Premium Synthetic Blend Motor Oil or Optional: MOTORCRAFT SAE 5W-30 Full Synthetic Motor Oil), per the factory service manual.
What is the oil capacity of a 2018 Ford Flex?
The 2018 Ford Flex oil capacity is 6.0 quarts with a filter change.
How often should I change the oil in my 2018 Ford Flex?
Most 2018 Ford Flex owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Ford recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 2018 Ford Flex?
Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2018 Ford Flex. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.