One thing many owners overlook is proper oil maintenance, specifically, understanding the engine oil capacity.
In this post, we’ll explore the oil capacities for all major M11 models, maintenance guidelines, and expert insights to help keep your engine running smoothly.
Cummins M11 Engine Oil Capacity Chart
| Engine Model | Oil Pan Capacity | Oil Filter Capacity | Total System Capacity |
|---|---|---|---|
| M11 Standard | 28–36 qt / 26.5–34 L | 2.75 qt / 2.6 L | 41 qt / 39 L |
| M11 CELECT | 28–36 qt / 26.5–34 L | 2.75 qt / 2.6 L | 41 qt / 39 L |
| M11 CELECT Plus | 28–36 qt / 26.5–34 L | 2.75 qt / 2.6 L | 41 qt / 39 L |
| M11-C330 | 28–36 qt / 26.5–34 L | 2.75 qt / 2.6 L | 41 qt / 39 L |
| M11-C335 | 28–36 qt / 26.5–34 L | 2.75 qt / 2.6 L | 41 qt / 39 L |
| M11-C350E20 | 28–36 qt / 26.5–34 L | 2.75 qt / 2.6 L | 41 qt / 39 L |
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Recommended Oil Type for Cummins M11
Always use high-quality API CI-4 or CJ-4 diesel engine oil, especially one that meets Cummins’ CES 20078 specifications. Here are some top choices:
- Shell Rotella T4 15W-40
- Mobil Delvac 1300 Super
- Valvoline Premium Blue
For colder climates, consider using 10W-30 or 5W-40 synthetic variants for better cold starts.
When to Change the Oil
Signs You Need an Oil Change
Be alert for these common signs:
- Engine knocking or louder-than-usual operation
- Black, dirty oil on dipstick
- Low oil pressure warning
- Increased fuel consumption
- Check Engine light
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Tips for Proper Oil Maintenance
- Use OEM filters: They’re designed specifically for your Cummins engine.
- Warm the engine before draining oil: This ensures better flow and removes more sludge.
- Always check for leaks: After an oil change, inspect around the oil pan and filter.
- Change oil filter every time: It traps harmful contaminants and sludge.
- Check oil level weekly: Especially important in older engines or heavy-duty applications.
Common Oil-Related Problems in M11 Engines
- Foaming oil – Often due to overfilling or using low-quality oil.
- Low oil pressure – Could be a result of a clogged filter or a failing oil pump.
- High oil consumption- May indicate worn piston rings or valve seals.
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FAQs
How much oil does a Cummins M11 take?
A Cummins M11 typically takes about 41 quarts (39 liters) of oil for a full system fill, which includes the oil pan, filter, and internal engine oil passages. The oil pan alone holds between 28–36 quarts (26.5–34 liters), depending on whether it’s a shallow or deep sump.
How many Litres is the M11 Cummins?
The Cummins M11 is an 11-liter engine, which is where it gets its name. It’s an inline-six diesel engine known for its heavy-duty performance and fuel efficiency.
How many litres of oil does a Cummins take?
It depends on the model. The Cummins M11 takes approximately 39 liters total, but other Cummins engines vary:
- ISX15: ~45–50 liters
- ISB 6.7: ~10.6 liters
- L9: ~24–26 liters.
Related Truck Engine Oil Capacity Chart(For All Models)
How much oil does a 12v Cummins hold?
A 12-valve Cummins (5.9L 12v) typically holds about 11.4–12 quarts (10.8–11.3 liters) of oil, including the filter. These engines are most commonly found in Dodge Ram pickups from the early 1990s to 1998.
How many liters is a 12v Cummins?
The 12v Cummins is a 5.9-liter diesel engine. It’s well-known for its mechanical simplicity and durability.
Where is the oil pressure sensor on a Cummins M11?
On the Cummins M11, the oil pressure sensor is generally located near the oil filter housing or on the driver’s side of the engine block, close to the rear near the oil cooler. It monitors oil pressure and sends data to the engine control module (ECM) or dash gauge.
What is the RPM of the M11 Cummins?
The standard governed speed for the Cummins M11 is 1800 to 2100 RPM, depending on its configuration and application. The idle speed is usually around 600–750 RPM, while max operating speeds for some industrial setups can go up to 2100–2200 RPM.
