The BMW N55 engine is a high-performance turbocharged inline-six that requires premium-quality synthetic oil to ensure longevity, performance, and efficiency.
Choosing the right engine oil not only keeps your engine lubricated but also prevents carbon buildup, reduces friction, and maintains optimal turbo performance. Below are 5 of the best N55 engine oil types available online.
N55 Engine Oil Type
1. Castrol EDGE 0W-40 Advanced Full Synthetic Motor Oil
Castrol EDGE 0W-40 is a highly recommended choice for BMW N55 engines because it meets BMW Longlife-01 specifications and provides superior performance under extreme driving conditions. This oil is designed to handle high temperatures, making it ideal for turbocharged engines like the N55.
Features:
- Meets BMW LL-01 specifications
- Advanced Titanium Technology for reduced metal-to-metal contact
- Excellent protection at high and low temperatures
- Improves fuel efficiency and horsepower response
- Maintains stability under extreme pressure
2. Liqui Moly Leichtlauf High Tech 5W-40
Liqui Moly is a German-made engine oil brand trusted by many BMW owners. The Leichtlauf High Tech 5W-40 is a fully synthetic oil designed to deliver excellent wear protection and extended oil life. It is particularly well-suited for N55 engines that demand consistent lubrication and stability.
Features:
- Meets BMW Longlife-01 approval
- Excellent lubrication during cold starts
- Reduces oil consumption and deposits
- High shear stability and oxidation resistance
- Extends engine life and performance
3. Mobil 1 FS European Car Formula 0W-40
Mobil 1 FS 0W-40 is one of the most popular oils for European performance cars, including BMW’s N55. It offers exceptional thermal stability and protection against sludge buildup, while also ensuring the engine runs smoothly at all RPMs.
Features:
- Approved by BMW LL-01
- Excellent protection in high-temperature turbo applications
- Outstanding low-temperature performance
- Enhances fuel efficiency and reduces engine wear
- Trusted by major European automakers for long-term engine protection
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4. Pennzoil Platinum Euro Full Synthetic 5W-40
Pennzoil Platinum Euro is engineered for high-performance European engines and is formulated with PurePlus Technology, which is made from natural gas rather than crude oil. This results in a cleaner base oil that delivers enhanced performance and reliability for N55 engines.
Features:
- Meets BMW LL-01 specifications
- Made from natural gas for superior purity
- Provides excellent piston cleanliness and wear protection
- Strong resistance against oil breakdown in extreme heat
- Helps reduce oil deposits in turbochargers
5. Valvoline European Vehicle Full Synthetic 5W-40
Valvoline European Vehicle Full Synthetic 5W-40 is formulated specifically for European cars that require LL-01-approved oils. It provides exceptional wear protection, ensures optimal performance in turbocharged engines, and resists oil breakdown under high stress.
Features:
- BMW LL-01 approved for compatibility with N55 engines
- Delivers maximum protection under high-temperature operation
- Excellent deposit control and cleanliness
- Superior cold-start protection
- Designed to extend engine life with strong anti-wear additives
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Why Choosing the Right Oil for the N55 Matters
The BMW N55 engine is renowned for its performance, but also for being particularly sensitive to maintenance. Using the wrong oil can lead to premature wear, increased oil consumption, carbon buildup, and even turbo failure. Sticking to fully synthetic oils that meet BMW’s Longlife-01 (LL-01) approval is crucial for ensuring optimal engine health.
Factors to consider when selecting oil for your N55 include:
- Viscosity Grade: Oils like 0W-40 and 5W-40 provide excellent cold start performance and high-temperature stability, making them ideal for turbocharged engines.
- Manufacturer Approval: Always check for BMW LL-01 approval to ensure the oil is tested and recommended for BMW engines.
- Driving Conditions: If you drive in hotter climates or under aggressive conditions, oils with superior thermal stability like Castrol EDGE or Mobil 1 FS are excellent choices.
- Oil Change Intervals: While BMW suggests longer intervals, many enthusiasts recommend changing oil every 5,000–7,500 miles for the N55 to prolong engine life.
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FAQs
Is 5W-30 good for N55?
Yes, 5W-30 can be used in the N55 engine as long as it meets BMW LL-01 specifications. However, many owners prefer 0W-40 or 5W-40 oils for better protection in high-performance and turbocharged conditions.
What oil is best for a BMW 335i?
The best oil for a BMW 335i, which uses the N54 or N55 engine depending on the year, is a fully synthetic oil that meets BMW LL-01 standards, such as Castrol EDGE 0W-40, Mobil 1 FS 0W-40, or Liqui Moly 5W-40.
What oil does a 2011 BMW 335i N55 take?
A 2011 BMW 335i with the N55 engine requires a fully synthetic oil approved under BMW LL-01 specifications, typically 5W-30, 0W-40, or 5W-40 grades depending on climate and driving conditions.
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Is 5W40 or 5W30 better for BMW?
Both are acceptable if LL-01 approved, but 5W-40 provides slightly better protection in hotter climates and under high load, while 5W-30 is more common for daily driving and moderate climates.
Is it bad to put 5/30 for 5W-20?
Yes, it is not recommended to substitute 5W-20 with 5W-30 unless the manufacturer allows it, as the viscosity difference can affect lubrication and fuel efficiency. Always follow BMW’s LL-01 oil specification for the N55.
Can I put 5W-30 oil in a BMW?
Yes, you can use 5W-30 in a BMW if it is fully synthetic and carries BMW LL-01 approval, ensuring it meets the engine’s requirements for protection, performance, and longevity.
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Final words
For BMW N55 engines, using the right oil is essential to maintain the performance, reliability, and longevity of your engine. Options like Castrol EDGE 0W-40, Liqui Moly 5W-40, Mobil 1 FS 0W-40, Pennzoil Platinum Euro 5W-40, and Valvoline European Vehicle 5W-40 are among the best choices available on Amazon US.
Each meets BMW’s LL-01 requirements and provides advanced protection against heat, friction, and deposits. By choosing one of these high-quality oils and maintaining consistent oil change intervals, you can keep your BMW N55 engine running smoothly for years to come.
