2022 Ram 2500 Oil Capacity by Engine (HEMI & Cummins)

The 2022 Ram 2500 takes either 7.0 quarts of oil for the 6.4L HEMI V8 or 12.0 quarts for the 6.7L Cummins Turbo Diesel, including the filter. Mixing up the two numbers, or the oil type each engine needs, is the single most common mistake on Ram 2500 oil changes.

This guide breaks down the exact capacity, oil type, and filter for each 2022 Ram 2500 engine. It also covers why the HEMI’s oil specification changed for 2022, how to check your level correctly, and the mistakes that lead to overfilled or underprotected engines.

2022 Ram 2500 Oil Capacity By Engine Quick Reference Chart

Confirm your engine and capacity here before buying oil or a filter. Both figures come straight from the official 2022 Ram 2500 and 3500 fluid capacities chart.

Both trucks use an oil change indicator system instead of a fixed mileage number. The dashboard alerts you when service is due based on your actual driving conditions, not a flat interval.

If you are researching specs across your 2022 Ram 2500, this pairs well with the 2022 Ram 2500 towing capacity chart for the same model year.

6.4L HEMI V8 Oil Type And Capacity Specs

The 6.4L HEMI V8 in a 2022 Ram 2500 holds 7.0 quarts, or 6.6 liters, of oil with the filter installed. This number has stayed consistent since the 6.4L HEMI first appeared as a heavy duty option.

Stellantis requires SAE 0W-40 full synthetic oil for this engine. Starting with the 2022 model year, the approved standard changed to material spec MS-A0921, replacing the older MS-12633 used from 2014 through 2021.

The genuine Mopar filter for this engine is part number MO-339. It is the same filter used across several other HEMI applications, including the 5.7L HEMI in the Ram 1500.

Running anything other than 0W-40 is not authorized for this engine. The viscosity is tied directly to how the Multi-Displacement System cycles cylinders.

Avoid these common substitutions:

• 5W-20 or 0W-20 oil meant for the Ram 1500’s 5.7L HEMI
• Any 0W-40 that only meets the older MS-12633 standard
• Bulk shop oil with no documented API or material standard match

6.7L Cummins Turbo Diesel Oil Type And Capacity Specs

The 6.7L Cummins Turbo Diesel in a 2022 Ram 2500 holds 12.0 quarts, or 11.4 liters, of oil with the filter installed. This is the Standard Output version, used in most 2500 series trucks.

Stellantis specifies SAE 10W-30 full synthetic for ambient temperatures above 0°F, or SAE 5W-40 for year round use in colder climates. Both must meet FCA Material Standard MS-10902 and API CJ-4, and products meeting Cummins specification CES 20081 also qualify, according to a Stellantis technical service bulletin on 6.7L oil usage.

The genuine Mopar filter for this engine is part number 05083285AA, sold under the counter as Mopar MO-285. It fits every 6.7L Cummins built from 2007.5 through 2024, before the 2025 switch to a cartridge style filter.

One detail trips up owners coming from an older truck. The 6.7L Cummins moved to hydraulic lifters starting with the 2019 redesign, and 15W-40 is no longer the recommended viscosity for these newer engines. If your last truck was a 2018 or earlier Cummins, do not default to 15W-40 on a 2022.

This engine also runs on a separate 5.7 gallon Diesel Exhaust Fluid tank. DEF is not oil and should never be topped off using the same funnel.

For a full breakdown of where the oil filter, dipstick, and other service points sit on this engine, see the 6.7 Cummins engine diagram and component guide.

Why 2022 Ram 2500 Oil Spec Changed To MS-A0921

The 7.0 quart and 0W-40 numbers for the 6.4L HEMI have not changed in years. What changed for 2022 is the certification the oil itself has to meet.

Owners and dealers quoting the older MS-12633 standard are not wrong for a 2014 through 2021 truck. On a 2022 model, the manual specifies MS-A0921 instead, confirmed directly from the owner’s manual text shared on a Ram Heavy Duty owner forum thread quoting the manual.

This is not a cosmetic update. Forum reports describe dealers requesting oil purchase receipts during warranty claims, including at least one case where a sample was sent out for lab testing to confirm the material standard was met.

The 6.7L Cummins side of the lineup is not affected by this change. MS-A0921 applies only to the 6.4L HEMI.

One more point worth separating clearly. The 5.7L HEMI used in a Ram 1500 is a different engine with a different oil spec entirely. Pouring 1500 oil into a 2500’s 6.4L HEMI is one of the most common mix ups owners make.

How To Check Oil Level On A 2022 Ram 2500

Checking your oil level correctly takes about two minutes and prevents the most common DIY mistake on this truck, which is overfilling.

1. Park on level ground and let the engine sit for 5 to 10 minutes after shutting it off so oil fully drains back into the pan.
2. Pull the dipstick, wipe it clean with a rag, and reinsert it fully.
3. Pull it again and read the level against the Min and Max marks.
4. On the 6.7L Cummins, give it slightly longer than the HEMI before checking. A cold start or short drive can make the level read lower than it actually is.
5. If the level sits above Max, do not just drive it off. Overfilling a turbo diesel can push oil into the intake system over time.

The 2022 Ram 2500 uses an oil change indicator system rather than a fixed mileage number. The dashboard displays an alert based on your actual driving conditions.

For the full list of fluid and filter checkpoints beyond the dashboard reading, cross reference the 2022 Ram 2500 maintenance schedule.

Common 2022 Ram 2500 Oil Mistakes To Avoid

These four mistakes account for most of the oil related questions on Ram and Cummins owner forums.

Using Ram 1500 oil in a 2500. The 5.7L HEMI’s 5W-20 or 0W-20 is not a substitute for the 6.4L HEMI’s 0W-40. They are different engines with different oiling requirements.

Running 15W-40 in a 2019 or newer Cummins. This was correct on older trucks. On a 2022, stick to 10W-30 or 5W-40 as outlined above.

Skipping the filter on a quick top off. Adding oil without changing the filter recirculates contaminants through fresh fluid from the first start.

Overfilling the 6.7L Cummins. Owners on forums often trace CCV filter saturation back to this exact mistake, covered in detail in the 6.7 Cummins CCV filter guide.

Always torque the drain plug to the exact figure in your specific owner’s manual. The HEMI and Cummins specs are not identical, and guessing here risks stripping the pan.

Get The Right Oil In Your 2022 Ram 2500 The First Time

The 2022 Ram 2500’s oil capacity comes down to two numbers. The 6.4L HEMI takes 7.0 quarts of 0W-40 meeting MS-A0921, and the 6.7L Cummins takes 12.0 quarts of 10W-30 or 5W-40.

Both figures come straight from Stellantis service documentation, not estimates. The only real risk is mixing up specs between engines, or carrying over habits from an older truck that no longer apply.

Match the capacity, match the spec, and check the level with the dipstick rather than guessing. That is the entire job.

2022 Ram 2500 Oil Capacity FAQ

How many quarts of oil does a 2022 Ram 2500 take?

It depends on the engine. The 6.4L HEMI V8 takes 7.0 quarts with the filter, and the 6.7L Cummins Turbo Diesel takes 12.0 quarts with the filter.

What oil does a 2022 Ram 2500 6.4 HEMI need?

SAE 0W-40 full synthetic oil meeting Chrysler Material Standard MS-A0921. This replaced the older MS-12633 standard used on 2014 through 2021 trucks.

What oil does a 2022 Ram 2500 6.7 Cummins need?

SAE 10W-30 for temperatures above 0°F, or SAE 5W-40 for year round and colder climates. Both must meet FCA Material Standard MS-10902 and API CJ-4.

Can I use 15W-40 in a 2022 Ram 2500 Cummins?

No. The 6.7L Cummins moved to hydraulic lifters in the 2019 redesign, and 15W-40 is not the recommended viscosity for 2019 and newer engines.

How often should I change the oil on a 2022 Ram 2500?

The truck uses an oil change indicator system rather than a fixed mileage figure. Follow the dashboard alert, which adjusts based on your actual driving conditions.