The Mercedes-Benz ML350 is a premium luxury SUV known for its smooth V6 performance, comfort, and long-distance reliability. It comes in different generations (W164 and W166), and each requires specific engine oil for optimal performance and engine protection.
Using the correct oil type is essential for maintaining engine health, preventing sludge buildup, and ensuring smooth operation in both petrol and diesel variants.
Mercedes ML350 Engine Oil Type
The recommended engine oil for Mercedes ML350 depends on engine generation and fuel type.
- W164 ML350 (2006–2011): 5W-40 or 5W-30 full synthetic (MB 229.5)
- W166 ML350 (2011–2015): 5W-30 or 5W-40 MB-approved oil (MB 229.51)
- Diesel Bluetec models: Low SAPS 5W-30 (MB 229.51 / 229.52)
Best Choice: Fully synthetic 5W-30 MB 229.5 / 229.51 approved oil is the safest and most widely recommended option for most ML350 engines.
Mercedes ML350 Oil Capacity
Oil capacity varies slightly depending on model year and engine configuration.
Mercedes ML350 Oil Change Interval
While Mercedes recommends long service intervals, shorter oil change cycles improve engine longevity.
Driving Condition | Recommended Interval |
|---|---|
Normal Driving | 8,000 – 12,000 km |
City Driving / Traffic | 6,000 – 8,000 km |
Heavy Use / High Load | 5,000 – 6,500 km |
Mercedes ML350 Oil Change Cost
- DIY Cost: $80 – $140
- Independent Workshop: $150 – $300
- Dealership: $300 – $550
Maintenance Tips for Mercedes ML350
- Always use MB-approved synthetic oil (229.5 / 229.51)
- Replace oil filter with every oil change
- Check oil level regularly (electronic system in W166)
- Avoid extended oil intervals for better engine life
- Inspect for valve cover and oil cooler leaks
Frequently Asked Questions (FAQ)
What oil does Mercedes ML350 use?
It uses 5W-30 or 5W-40 full synthetic oil meeting MB 229.5 or 229.51 standards.
How much oil does ML350 take?
Approximately 7.0 litres for petrol models and up to 8.0 litres for diesel versions.
How often should ML350 oil be changed?
Every 6,000–10,000 km is ideal for long engine life.
Can I use 5W-40 instead of 5W-30?
Yes, especially in hotter climates or for older W164 engines.
Final Thoughts
The Mercedes ML350 is a durable luxury SUV, but it requires high-quality synthetic oil and proper maintenance intervals. Using MB-approved oil ensures smooth performance, reduced engine wear, and long-term reliability.