2018 Ford Flex Oil capacity
Depends on your engine. Choose yours, or compare them here.
- 3.5L Duratec 6.0 qt with filter
- 3.5L Ecoboost 6.0 qt with filter
6.0qt
With filter · 3.5L Duratec
6.0qt
With filter · 3.5L Ecoboost
2018 Ford Flex Owner's Manual, PDF pages 311 and 315
6.0 qt (5.7 L)Open the manual at this page ↗Added Oct 16, 2026
See where it's printed
Oil capacity (with filter) · 3.5L Duratec · PDF page 311
6.0 qt (5.7 L)
Oil capacity (with filter) · 3.5L Ecoboost · PDF page 315
6.0 qt (5.7 L)
2018 Ford Flex Owner's Manual, PDF page 311
6.0 qt (5.7 L)Open the manual at this page ↗Added Oct 16, 2026
See where it's printed
Oil capacity (with filter) · 3.5L Duratec · PDF page 311
6.0 qt (5.7 L)
2018 Ford Flex Owner's Manual, PDF page 315
6.0 qt (5.7 L)Open the manual at this page ↗Added Oct 16, 2026
See where it's printed
Oil capacity (with filter) · 3.5L Ecoboost · PDF page 315
6.0 qt (5.7 L)
See every quote (2 values)
All versions
| Applies to | Value | Manual says | Page |
|---|---|---|---|
| 3.5L Duratec | 6.0 qtwith filter | “6.0 qt (5.7 L)” | PDF page 311 ↗ |
| 3.5L Ecoboost | 6.0 qtwith filter | “6.0 qt (5.7 L)” | PDF page 315 ↗ |
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Matches the spec above
Matches the spec above
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Check the level before you drive
- Park on level ground. Turn off the engine and follow the waiting period in your owner's manual.
- Pull, wipe, and reinsert the dipstick. Use a clean cloth, then push the dipstick all the way back in.
- Read the level between the marks. Pull it out again. The oil should sit between the upper and lower marks.
- Top up a little at a time, then recheck. Use the specified oil. Don't fill above the upper mark.
A quick level check, not a full oil-change guide. Follow your manual's procedure.
Confirm with your own manual, dipstick or door-jamb label.
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