Ford 7.3 Gas Oil Capacity Chart: Godzilla Specs (2026)
Quick answer: The Ford 7.3L gasoline “Godzilla” V8 takes 8.0 quarts (7.57 L) of SAE 5W-30 with a new filter. Ford’s Motorcraft Oil Quick Reference (v23, 7/2026) lists that fill under WSS-M2C971-A1 with Motorcraft FL-820-S. Earlier Super Duty owner’s manuals print WSS-M2C961-A1 for the same 8.0 qt / 5W-30 fill. This is the gas Super Duty engine—not the old 7.3 Power Stroke diesel (see our diesel oil capacity chart).
Confirm the exact WSS code in your truck’s Capacities and Specifications section (or oil-fill guidance). Match both the viscosity and the Ford code on the bottle. Do not use the 6.7L Power Stroke diesel capacity or diesel oil spec on a Godzilla.
7.3 Godzilla Gas Oil Capacity Chart
| Item | Ford figure | Source |
|---|---|---|
| Oil capacity (with filter) | 8.0 qt (7.57 L) | Engine Oil Capacity – 7.3L, Gasoline / Motorcraft Oil Quick Reference |
| Viscosity | SAE 5W-30 | 7.3L gasoline oil page |
| Current Motorcraft chart code | WSS-M2C971-A1 | Motorcraft chart v23 (7/2026) |
| Earlier owner’s manual code | WSS-M2C961-A1 | 2024-era Super Duty OM / Capacities – 7.3L |
| Motorcraft oil examples printed in OM | XO-5W30-Q1SP, XO-5W30-Q1FS | 7.3L gasoline oil page |
| Oil filter | Motorcraft FL-820-S | Motorcraft Parts – 7.3L / Motorcraft chart |
| Filter alternate (if Motorcraft unavailable) | SAE/USCAR-36, Filter Type D | Motorcraft Parts – 7.3L |
| Cold-climate alternate (−22 °F / −30 °C or below) | SAE 0W-30 (WSS-M2C963-A1 on earlier OM; WSS-M2C973-A1 on newer OM) | 7.3L gasoline oil page / Newer 7.3L oil page |
Primary sources: Ford online Super Duty owner’s manuals (Engine Oil Capacity and Specification – 7.3L, Gasoline; Motorcraft Parts – 7.3L) and the Motorcraft Oil Quick Reference Oil Applications and Crankcase Capacities Chart (Version 23 | US | 7/2026), which lists “7.3L V8 2V F-Super Duty / Econoline (21-)” at 8.0 qt with FL-820-S under the 5W-30 WSS-M2C971-A1 heading. Always prefer the manual that matches your VIN/model year.
Gas Godzilla vs 6.7 Power Stroke Diesel (Do Not Mix)
Search results and parts counters often mix the 7.3L gas engine with diesel oil figures. Keep them separate:
| Engine | Oil capacity (with filter) | Oil family | Typical Motorcraft filter |
|---|---|---|---|
| 7.3L Godzilla gasoline V8 | 8.0 qt (7.57 L) | SAE 5W-30 gasoline (WSS-M2C971-A1 / earlier 961-A1) | FL-820-S |
| 6.7L Power Stroke diesel (F-250–F-600 through 2022) | 13.0 qt | Diesel oil meeting WSS-M2C171-F1 | FL-2124-S (replaced FL-2051-S) |
| 6.7L Power Stroke diesel (F-250–F-600 2023+; F-650/F-750 2017–2023) | 15.0 qt | WSS-M2C171-F1 | FL-2124-S |
| 6.7L Power Stroke diesel (F-650/F-750 2024+) | 17.0 qt | WSS-M2C171-F1 | FL-2124-S |
Diesel rows and viscosities by temperature are covered on our 6.7 Powerstroke oil capacity chart and Ford diesel oil capacity chart. A Godzilla takes gasoline 5W-30, not CK-4 / 171-F1 diesel oil.
WSS-M2C961-A1 vs WSS-M2C971-A1 on the 7.3 Gas
Capacity did not change: every Ford 7.3L gasoline oil page we checked still prints 8.0 qt (7.57 L) including the filter. What changed is the Ford WSS code printed next to SAE 5W-30.
- Earlier Super Duty manuals (including a 2024-era Engine Oil Capacity – 7.3L, Gasoline page) list WSS-M2C961-A1 for 5W-30 and WSS-M2C963-A1 for the cold-climate 0W-30 alternate.
- Newer Super Duty manuals list WSS-M2C971-A1 for 5W-30 and WSS-M2C973-A1 for the cold-climate 0W-30 alternate.
- Ford’s July 2026 Motorcraft chart places the 7.3L Super Duty / Econoline row under the SAE 5W-30 WSS-M2C971-A1 heading.
- Use the code in your year’s manual. An oil that prints your exact WSS code on the label meets that page. Viscosity alone is not enough. See the Ford engine oil recommendation chart for the broader 961 vs 971 lookup.
Ford also prints Motorcraft SAE 5W-30 part examples (XO-5W30-Q1SP, XO-5W30-Q1FS) on the 7.3L gasoline oil page and states that oil additives are unnecessary and can cause damage your warranty does not cover.
Oil Filter and Fill Tips
- Filter: Motorcraft FL-820-S is the part Ford lists for the 7.3L. If a Motorcraft filter is not available, Ford’s Motorcraft Parts – 7.3L page says to use a filter that meets SAE/USCAR-36 Performance Specifications, Filter Type D.
- Fill volume: start from the published 8.0 qt with a new filter, then finish on the dipstick on level ground after the oil has settled. Do not assume every drain leaves the pan bone-dry.
- Cold climates: Ford recommends SAE 0W-30 meeting the alternate WSS code when ambient temperature reaches −22 °F (−30 °C) or below, and notes the alternate when you regularly operate above 5,000 ft (1,524 m) and under −4 °F (−20 °C).
- Interval: follow the Intelligent Oil-Life Monitor and the scheduled maintenance information in your owner’s manual. Towing, idling and short trips shorten oil life; the monitor is built to track that. Do not invent a fixed 3,000-mile schedule over the IOLM without a manual basis.
Related service links: 7.3 Godzilla torque specs, F-250 towing capacity chart, and Super Duty towing chart by year.
How to Check the Level After a Change
- Park on level ground and shut the engine off.
- Wait several minutes so oil drains back to the pan.
- Pull the dipstick, wipe it, reinsert fully, then read.
- Add only enough 5W-30 (correct WSS code) to bring the level into the normal range—do not fill past the full mark.
- Recheck after a short run and another shutdown if the level looked borderline.
Frequently Asked Questions
How much oil does a Ford 7.3 Godzilla take?
8.0 quarts (7.57 L) including a new oil filter, per Ford Super Duty Engine Oil Capacity pages for the 7.3L gasoline engine and the Motorcraft Oil Quick Reference chart.
What oil does a 7.3 Godzilla take?
SAE 5W-30. Ford’s current Motorcraft chart lists WSS-M2C971-A1; earlier Super Duty manuals list WSS-M2C961-A1 for the same viscosity. Match the code in your year’s manual.
What oil filter does a 7.3 Godzilla use?
Motorcraft FL-820-S, per Ford’s Motorcraft Parts – 7.3L page and the Motorcraft oil chart. If Motorcraft is unavailable, Ford points to SAE/USCAR-36 Filter Type D.
Is the 7.3 gas oil capacity the same as the 7.3 Power Stroke diesel?
No. This page is the 7.3L gasoline Godzilla at 8.0 quarts of 5W-30. The old 7.3 Power Stroke is a diesel with different oil capacity and diesel oil specs—see our diesel oil capacity chart.
Does a 7.3 Godzilla take 5W-20?
Ford’s 7.3L gasoline oil pages specify SAE 5W-30, not 5W-20. Use the viscosity and WSS code printed for your truck.
What about cold weather oil for a 7.3 Godzilla?
When ambient temperature reaches −22 °F (−30 °C) or below, Ford recommends SAE 0W-30 meeting the alternate WSS code on your manual (WSS-M2C963-A1 on earlier pages, WSS-M2C973-A1 on newer pages).
How often should I change the oil in a 7.3 Godzilla?
Follow the Intelligent Oil-Life Monitor and the scheduled maintenance guide in your owner’s manual. Towing and heavy idle shorten oil life; the monitor accounts for that. Ford does not replace the IOLM with a one-size mileage number on the oil-capacity page.
Related Oil Capacity Guides
- Ford Engine Oil Recommendation Chart
- 6.7 Powerstroke Oil Capacity Chart
- Ford Diesel Oil Capacity Chart
- 2023 6.7 Powerstroke Oil Capacity
- 5.0 Coyote Oil Capacity Chart
