Engine oil is critical to the ML350’s performance. It lubricates engine components, reduces friction, minimizes wear, and helps regulate temperature. Without proper oil levels and quality, engine components can wear prematurely, reduce efficiency, and potentially lead to costly repairs.
Mercedes ML350 Engine Oil Capacity
The Mercedes ML350 engine oil capacity is 7.0 liters (7.4 quarts) when performing an oil change with filter replacement.
It is recommended to use fully synthetic 5W-40 or 5W-30 engine oil that meets Mercedes-Benz MB 229.5 or MB 229.51 specifications to ensure optimal engine performance and longevity.
Regular oil changes every 10,000 miles or 12 months, and maintaining the correct oil level helps prevent engine wear, overheating, and maintain smooth operation.
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Best Engine for Mercedes ML350
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1. Mobil 1 European Car Formula Full Synthetic 5W‑40
- Protects critical engine parts for extended intervals, up to 10,000 miles between oil changes.
- Excellent oxidation control, preventing breakdown under high heat.
- Stable viscosity in extreme temperatures, from very hot to very cold conditions.
- Suitable for many European vehicles, including Mercedes-Benz models.
2. Castrol EDGE Euro 5W‑40 A3/B4 Advanced Full Synthetic
- Meets Mercedes-Benz MB 229.5 specification for gas engines.
- Advanced TITANIUM technology increases film strength, reducing friction and wear.
- Maintains stable viscosity for smooth and reliable engine performance.
- Keeps engines clean by preventing sludge and deposits.
3. Liqui Moly Leichtlauf High Tech SAE 5W‑40
- Officially certified with Mercedes-Benz MB 229.5 approval.
- Fast oil delivery ensures critical engine parts are protected even at low temperatures.
- Low-friction formula reduces oil and fuel consumption.
- Designed for long service intervals with high stability and resistance to ageing.
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Choosing the Right Oil Filter
When changing the oil, always replace the oil filter. A high-quality oil filter removes contaminants, preventing them from circulating in the engine. Mercedes-Benz OEM filters are recommended, but aftermarket filters meeting MB specifications can also be used.
Engine Oil Capacity by Model Year
Most ML350 models, including 2006 to 2015 variants with the 3.5-liter V6 engine, require approximately 7.0 liters of engine oil when changing the oil and replacing the filter. If only performing an oil top-up without a filter change, slightly less oil may be needed.
Here’s a simplified breakdown:
- 2006–2011 ML350: 7.0 liters (7.4 quarts) with oil filter replacement
- 2012–2015 ML350: 7.0 liters (7.4 quarts) with oil filter replacement
Always check your specific model year in the owner’s manual, as slight variations can exist depending on engine configuration or production batch.
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Recommended Engine Oil Type
Mercedes-Benz recommends using fully synthetic engine oil for the ML350 to ensure optimal engine performance. The common viscosities include:
- 5W-40: Offers excellent performance in a wide temperature range, especially ideal for warmer climates.
- 5W-30: Provides better fuel efficiency and smoother flow at lower temperatures, suitable for colder climates.
Mercedes-Benz oil specifications are critical to follow. Look for oils labeled MB 229.5 or MB 229.51, which meet Mercedes’ high standards for wear protection, cleanliness, and performance under high temperatures. Using the correct specification ensures your warranty remains valid and helps avoid engine issues.
Signs Your ML350 Needs an Oil Change
Regular oil changes are essential for your ML350’s engine health. Signs that indicate it’s time for an oil change include:
- Dark or dirty oil – Fresh engine oil is amber in color and clear. Dark, murky oil indicates it’s time for a replacement.
- Engine noise – Low or degraded oil can cause increased friction, resulting in unusual engine sounds.
- Oil change light – The ML350 is equipped with a maintenance reminder system that notifies when an oil change is due.
- Reduced performance – Poor lubrication affects engine efficiency, leading to sluggish acceleration or decreased fuel economy.
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How to Check Engine Oil Level
To ensure your ML350 has the correct oil level:
- Park on level ground – This provides an accurate oil measurement.
- Turn off the engine – Wait a few minutes for oil to settle in the pan.
- Use the dipstick – Pull out the dipstick, wipe it clean, reinsert it, and then remove to check the level.
- Add oil if needed – Only add the recommended type and avoid overfilling.
Maintaining the correct oil level prevents engine wear and overheating.
Oil Change Interval
Mercedes-Benz recommends an oil change approximately every 10,000 miles or 12 months, whichever comes first. However, this can vary based on driving habits, climate, and road conditions. Frequent short trips or driving in dusty or extreme temperature environments may necessitate more frequent changes.
Tips for Maintaining Your ML350 Engine
- Regular inspections: Check for oil leaks, unusual noises, or burning smells.
- Use recommended oil: Avoid cheaper or lower-spec oils that can harm engine performance.
- Monitor oil pressure: The ML350 features an oil pressure warning light; address any alerts immediately.
- Keep records: Track oil changes and maintenance to maintain vehicle value and engine health.
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FAQs
How many liters is a Mercedes ML350?
The Mercedes ML350 typically has a 3.5-liter V6 engine, meaning its engine displacement is 3.5 liters.
How much oil does a 3.5 L V6 engine take?
A 3.5 L V6 engine in the ML350 requires approximately 7.0 liters (7.4 quarts) of engine oil when performing an oil change with filter replacement.
What kind of oil does a 2012 Mercedes ML350 take?
A 2012 Mercedes ML350 should use fully synthetic 5W-40 or 5W-30 engine oil that meets Mercedes-Benz MB 229.5 or MB 229.51 specifications for optimal performance and engine protection.
How much oil does a 3.0 L diesel take?
For a 3.0 L diesel engine in Mercedes-Benz vehicles, the oil capacity is generally around 8.5 liters (9 quarts), but it’s important to check the owner’s manual for exact specifications.
How much oil does a Mercedes ML350 take?
The Mercedes ML350 requires 7.0 liters (7.4 quarts) of engine oil when performing a full oil and filter change.
What is the common problem of ML350?
Common problems reported for the ML350 include air suspension failures, balance shaft or timing chain issues, transmission leaks, electrical problems, and occasional turbocharger or injector failures in diesel models.
Final words
The Mercedes ML350 engine oil capacity is 7.0 liters (7.4 quarts) when changing the oil and filter. Using fully synthetic 5W-40 or 5W-30 oil that meets Mercedes-Benz specifications ensures your engine runs smoothly and efficiently. Regular maintenance, timely oil changes, and attention to oil levels prolong the life of your ML350 and keep it performing at its best.
