What Oil Is Best for a BMW 335i?

The best oil for a BMW 335i is a high‑quality, fully synthetic engine oil that meets BMW’s Longlife (LL) specifications—specifically BMW LL‑01 or BMW LL‑01 FE for most gasoline 335i models, typically in 0W‑40 or 5W‑40 viscosity for broad protection, with 5W‑30 LL‑01 FE also acceptable in many climates. Choosing an oil that matches both BMW’s spec and your engine’s generation (N54 or N55) is critical for performance, turbocharger health, and long‑term reliability.

Understanding the BMW 335i and Its Engine

The BMW 335i, produced mainly between 2006 and the mid‑2010s across E90/E92/E93 and F30 generations, is powered by turbocharged inline‑six engines (the N54 and later N55). These engines are known for strong performance but also for high thermal loads, making proper oil selection more important than in many non‑turbo or lower‑output engines.

N54 vs. N55: Why the Difference Matters

The early E9x 335i (around 2007–2010 in many markets) used the twin‑turbo N54 engine, while later E9x and the F30 335i moved to the single‑twin‑scroll‑turbo N55. Both are direct‑injection, turbocharged straight‑sixes, sensitive to oil quality and viscosity.

Though oil requirements are broadly similar, the N54 is particularly known for running hot and for issues like turbo wastegate rattle, carbon buildup, and high levels of blow‑by—factors that place a premium on robust, shear‑stable synthetic oils. The N55 is somewhat more refined but still demands high‑quality synthetic oil that meets BMW’s official standards.

BMW’s Official Oil Specifications for the 335i

BMW does not just specify a viscosity (like 0W‑40); it defines performance standards called Longlife (LL) specifications. For the BMW 335i, choosing oil that meets one of these BMW specs is more important than the brand name alone.

The following list outlines the key BMW Longlife specifications relevant to a 335i and what they mean for owners.

• BMW Longlife‑01 (LL‑01): The primary spec for most gasoline BMWs from early‑2000s through mid‑2010s. Designed for high‑performance engines and longer oil change intervals. Most 335i models (N54/N55) were originally specified to use LL‑01. Many 0W‑40 and 5W‑40 European synthetic oils carry this approval.
• BMW Longlife‑01 FE (LL‑01 FE): A “fuel‑economy” variant of LL‑01 using lower‑viscosity base oils. Often available as 0W‑30 or 5W‑30. Suitable where specified by BMW, especially for later N55 engines and moderate climates.
• BMW Longlife‑04 (LL‑04): Primarily for low‑SAPS oils used with diesel particulate filters but sometimes seen on gasoline‑compatible European oils. In North America, BMW typically recommended LL‑01/LL‑01 FE for gasoline 335i rather than LL‑04 due to fuel and emissions considerations; in Europe, LL‑04 may be specified in certain markets.

Understanding these specifications helps ensure you choose an oil that is not only the right thickness but also tested for the detergency, oxidation resistance, and shear stability these turbocharged six‑cylinder engines require.

Recommended Viscosity Grades for a BMW 335i

BMW’s own documentation, plus field experience in the enthusiast community, point toward a few viscosity options that tend to work best in most climates and use cases.

The following list describes the most common viscosity grades used successfully in BMW 335i engines, along with when they are typically preferred.

• 0W‑40 (LL‑01): Widely considered a “gold standard” for N54/N55 in mixed or warm climates. Flows well in cold starts while remaining robust at high temperatures and under boost. Many European 0W‑40 oils carry both LL‑01 and ACEA A3/B4 approvals, making them strong all‑round choices.
• 5W‑40 (LL‑01): Similar high‑temperature protection to 0W‑40 with slightly thicker cold‑start behavior—still acceptable in most climates. Popular among owners who drive hard, track their cars, or live in hotter regions.
• 5W‑30 (LL‑01 or LL‑01 FE): Often factory‑spec in many markets, especially for daily use in moderate climates. Good for fuel economy and everyday driving. For aggressive driving or sustained high‑temperature use, some enthusiasts prefer stepping up to 0W‑40/5W‑40.
• 0W‑30 (LL‑01 FE): Fuel‑saving option for newer N55 applications and colder climates. Still acceptable where BMW lists LL‑01 FE, but owners who regularly drive at high speed or with heavy loads often lean toward 40‑weight oils.

Choosing between these typically comes down to climate, driving style, and whether your priority leans more toward fuel economy or maximum protection under sustained boost and heat.

Top Oil Types and Brands That Meet BMW Specs

While BMW dealerships sell branded oil, many high‑quality aftermarket oils meet BMW’s Longlife standards and are widely used by independent shops and enthusiasts, often at lower cost and with equal or better performance.

The list below highlights commonly recommended fully synthetic oils for a BMW 335i that—subject to label verification—typically meet LL‑01 or LL‑01 FE and provide strong real‑world results.

• BMW Genuine TwinPower Turbo 0W‑30 / 5W‑30 / 0W‑40: Sold at dealers and labeled for BMW LL specs. Convenient and fully compliant with BMW’s recommended intervals. Often rebadged from major oil producers (e.g., Shell/GT‑L base). A solid choice if you want OEM‑branded certainty.
• Castrol EDGE 0W‑40 A3/B4 (often with LL‑01 approval): Popular among European‑car owners, widely available, and often explicitly lists “BMW LL‑01” on the label. Well‑suited for N54/N55 engines that see spirited driving.
• Mobil 1 0W‑40 FS (European Car Formula): Longtime favorite in the BMW community, typically carrying BMW LL‑01 approval (verify current label). Strong high‑temperature stability and cleaning additives; good for mixed daily and aggressive use.
• Liqui Moly Top Tec / Synthoil series (e.g., 5W‑40, 0W‑40 with LL‑01): German‑made oils often marketed specifically for European performance cars. Frequently used by independent BMW specialists due to strong additive packages and compatibility with older seals.
• Motul 8100 series (e.g., X‑cess 5W‑40, X‑clean variants with LL‑01 or LL‑01 FE): Performance‑oriented synthetic oils with robust film strength. Favored by track‑day and tuned‑car owners; check which Motul variant currently lists BMW approvals.

Any of these, when matched with the correct BMW Longlife certification and viscosity suited to your climate and driving style, can serve as an excellent choice for a 335i engine.

How Driving Style and Climate Affect Your Choice

The “best” oil is not one‑size‑fits‑all; it depends on how and where the car is driven. A daily commuter in a mild climate has different needs than a heavily tuned N54 on a racetrack in summer.

Daily Driving and Mixed Use

For a stock or lightly modified BMW 335i used primarily for commuting and normal road use:

The following list lays out typical choices that balance protection, fuel economy, and practicality for everyday drivers.

• Moderate climates (most North America, Western Europe): 0W‑40 or 5W‑40 LL‑01, or 5W‑30 LL‑01/LL‑01 FE. Many owners opt for 0W‑40 or 5W‑40 to add a margin of protection for occasional hard driving.
• Colder climates (long winters, frequent freezing): 0W‑30 LL‑01 FE or 0W‑40 LL‑01 for better cold‑start flow while maintaining high‑temperature protection.
• Hot climates (desert or very warm regions): 5W‑40 LL‑01 is often preferred, particularly for N54 engines, due to its higher high‑temp viscosity and resistance to thinning under sustained heat.

For most drivers, staying within these ranges and respecting BMW’s specs offers ample protection and performance without overcomplicating the choice.

Spirited Driving, Tuning, and Track Use

Enthusiasts often modify 335i engines with tunes, upgraded intercoolers, and higher boost, all of which increase stress on the oil. Track days and repeated high‑speed runs push oil temperatures higher and can cause standard‑interval oils to shear or oxidize faster.

The following list summarizes how more aggressive use should influence your oil and service decisions.

• Use a robust LL‑01 0W‑40 or 5W‑40: These weights offer a thicker film at operating temperature, helping protect bearings, turbochargers, and cam surfaces under high load.
• Shorten oil change intervals: Instead of BMW’s extended intervals (often ~10,000–15,000 miles / ~15,000–25,000 km), many enthusiasts change at 5,000–7,500 miles (8,000–12,000 km), or even sooner for hard track use.
• Monitor oil temperature and consumption: High‑boost or track‑driven N54/N55 engines may consume more oil; checking level frequently is as important as the oil choice itself.
• Consider higher‑ZDDP or “racing” oils only with caution: Some racing oils may not carry BMW LL approvals and can have additive balances that are less ideal for extended street use or catalytic converters. Use them only if you fully understand the trade‑offs.

For tuned or heavily used 335is, these adjustments help the chosen oil maintain its protective qualities in conditions far harsher than BMW originally assumed.

Oil Change Intervals and Maintenance Considerations

BMW’s extended service intervals were designed to lower maintenance frequency and costs on paper, but many 335i owners adopt more conservative intervals to protect these complex turbocharged engines.

The following list outlines practical guidelines for oil change intervals and related maintenance that support engine longevity.

• Standard street use: 5,000–7,500 miles (8,000–12,000 km) or once per year, whichever comes first, is a common enthusiast recommendation—shorter than BMW’s original intervals but still practical for daily use.
• Hard or frequent spirited driving: Closer to 5,000 miles (8,000 km) or every 6 months is sensible, especially for N54 engines driven aggressively.
• Track use or high‑boost tuning: Change oil after every few track events or roughly 3,000–5,000 miles (5,000–8,000 km), depending on oil temperature history and how severe the sessions are.
• Use a quality oil filter: OEM BMW, Mann, Mahle, or other high‑quality filters are recommended. Cheap filters can undermine even the best oil by allowing particles or poor flow.
• Check oil level regularly: Many 335i models use an electronic dipstick; use the iDrive or onboard menu to check level regularly, especially on N54 engines known for potential oil consumption.

Sticking to these intervals and procedures often does more to protect your 335i engine than chasing minor differences between premium oil brands.

Common Mistakes When Choosing Oil for a 335i

Even well‑intentioned owners sometimes select oil that is technically the wrong type for a high‑output turbo BMW, potentially shortening component life or causing performance issues over time.

The list below points out frequent pitfalls and how to avoid them when servicing a BMW 335i.

• Ignoring BMW Longlife specs: Picking oil solely on viscosity (e.g., “any 5W‑30”) without confirming LL‑01/LL‑01 FE approval can mean using oil that lacks the detergents, shear stability, or temperature resilience needed for N54/N55 engines.
• Using conventional or semi‑synthetic oils: The 335i’s turbocharged engine is designed for fully synthetic oil; using conventional or “blend” oils risks sludge, coking in turbo lines, and faster degradation.
• Extending change intervals too far: Relying strictly on long OEM intervals or CBS (Condition Based Service) can mean oil stays in the engine while heavily degraded, especially in cars that see short trips or hard driving.
• Mixing multiple oils frequently: Topping up with random oils of unknown spec can dilute the additive package and performance characteristics. If you must mix, keep within the same viscosity and BMW spec.
• Overfilling or underfilling: Because many 335i models lack a traditional dipstick, it’s easy to misjudge level. Incorrect oil quantity can affect crankcase pressure, foaming, or lubrication under high G‑loads.

Avoiding these missteps helps ensure that the oil you choose delivers the expected level of protection and that the 335i’s engine remains reliable over the long term.

Practical Recommendations by Scenario

While exact best choices can vary by region and model year, owners often look for concrete, situation‑based guidance. The recommendations below assume a typical 335i (N54 or N55) in good mechanical condition; always cross‑check with your specific owner’s manual and local climate.

The following list provides scenario‑based examples of oils that commonly work well, assuming they carry current BMW LL‑01 or LL‑01 FE approval on the label.

• Stock 335i, mixed city/highway, moderate climate: A 0W‑40 or 5W‑40 LL‑01 (e.g., Mobil 1 0W‑40 FS, Castrol EDGE 0W‑40, BMW 0W‑40) changed every ~6,000–7,500 miles.
• Mild tune (Stage 1), spirited driving, warm climate: 5W‑40 LL‑01 (e.g., Liqui Moly 5W‑40 LL‑01‑approved, Motul 8100 X‑cess 5W‑40) with ~5,000–6,000‑mile intervals.
• Cold climate, mostly gentle driving: 0W‑30 LL‑01 FE or 0W‑40 LL‑01, depending on whether you prioritize fuel economy (0W‑30) or extra high‑temp margin (0W‑40).
• Frequent track days / high‑boost tune: Robust 0W‑40 or 5W‑40 LL‑01 from a reputable European‑spec line (Motul, Liqui Moly, Mobil 1, Castrol) with shorter intervals (3,000–5,000 miles, often with post‑event changes).

These examples are not exhaustive but represent patterns commonly used by experienced owners and reputable independent BMW specialists.

Summary

For a BMW 335i, the best engine oil is a fully synthetic product that explicitly meets BMW’s Longlife specifications—primarily LL‑01 or LL‑01 FE—with viscosity tailored to your climate and driving style. In practice, that often means a 0W‑40 or 5W‑40 LL‑01 oil for strong, all‑round protection, or a 5W‑30/0W‑30 LL‑01 FE oil for lighter duty and fuel economy. Premium European‑spec synthetics from brands like BMW (TwinPower), Mobil 1, Castrol, Liqui Moly, and Motul are widely used, provided they carry the correct BMW approvals on the label. Combined with conservative oil change intervals, a quality filter, and regular level checks, these oils help keep the N54 and N55 engines in the 335i running smoothly, reliably, and safely under boost for the long term.

What oil is best for BMW 3 series?

The best engine oil for a BMW 3 Series depends on the model year and engine, so always check your owner’s manual first. For newer models, a 0W-20 or 0W-30 with a BMW Longlife-14 FE+ or LL-01 FE approval is often recommended for fuel efficiency. For older models or different driving conditions like racing or hot climates, a thicker 0W-40 or 5W-40 (or even 5W-30) with a BMW Longlife-01 rating may be suitable.
 
For most modern BMW 3 Series

• Recommendation: 0W-20 or 0W-30 with a BMW LL-14 FE+ or LL-01 FE approval rating.
• Why: These oils are designed for modern engines to improve fuel economy and meet the specific requirements for newer models. 

For older models or specific driving conditions

• Recommendation: 5W-30 or 5W-40 with a BMW LL-01 approval rating. 
• Why: This viscosity is recommended for older 3 Series models or for drivers in hotter climates or those who engage in high-performance driving. 

How to choose the right oil

• Check the owner’s manual: This is the most important step to ensure you use the correct oil for your specific vehicle. 
• Look for the BMW Longlife specification: The oil must have the correct specification (e.g., LL-01, LL-01 FE, LL-14 FE+) for your engine. 
• Consider your climate: A thicker oil might be better in very hot climates. 
• Opt for full synthetic: Full synthetic oils are generally recommended for the best lubrication and protection, especially for high-performance or track use. 

What is BMW recommended engine oil?

BMW recommends a high-quality synthetic oil that meets specific BMW Longlife (LL) standards, such as LL-01, LL-04, or LL-17 FE+, with common recommendations including 5W-30 or 0W-20. The exact type and weight depend on the specific model and year, so you should always check the owner’s manual or consult a certified BMW technician. Reputable brands like Mobil 1 and Castrol also produce oils that meet these specifications.
 
Key recommendations

• Check your owner’s manual: This is the most important step, as the specific requirements vary by model and engine. 
• BMW-specific oils: BMW offers its own line of oils, such as the BMW TwinPower Turbo Engine Oils, which are specifically designed for BMW engines. 
• Common viscosities:
  • 5W-30: A very common recommendation for many modern BMW gasoline engines, including turbocharged ones. 
  • 0W-20: Often recommended for the newest models, especially in certain regions. 
  • 0W-40: Another versatile synthetic oil that works well for many BMW engines. 
  • 10W-60: Used in some older ///M high-performance models, so check your manual carefully. 
• Approved brands: While BMW’s own brand is a safe bet, many other brands make oils that meet BMW specifications. Some are: 
  • Mobil 1 (e.g., Mobil 1 ESP 5W-30)
  • Castrol Edge (e.g., Castrol Edge 0W-20 (LL-17 FE+)) 
  • Valvoline
  • Shell / Pennzoil 
• Use synthetic oil: BMW recommends synthetic oil for its superior performance and longevity. 

Important note

• Diesel engines: Diesel BMWs will have specific requirements, often using a diesel-specific oil like Shell Helix Ultra ECT C3 5W-30. 
• High-performance engines: Older ///M cars may require a heavier weight like 10W-60, which is different from standard models. 
• Regional differences: Oil specifications can vary by region due to differences in fuel and climate. The oils used in the US, for example, have specific requirements related to high sulfur content in fuel. 

Can I use any 5W-30 oil in my BMW?

If you look in the manual, it’ll tell you exactly what to use. 0w30, 5w30, 0w40, and 5w40 are perfectly okay. 0w30 and 5w30 are the exact same viscosity at operating temperature.

What oil does a BMW 335i take?

A BMW 335i requires a full synthetic oil, with common recommendations being 5W-30 or 0W-30, although some older models with the N54 engine may use 5W-40. It’s essential to look for oil that meets the BMW LongLife-01 (LL-01) specification for most years. Always check your owner’s manual or oil cap for the most accurate information for your specific model year. The N55 engine typically requires about 6.5 quarts of oil. 
Oil specifications

• Viscosity: 5W-30 is a common recommendation, but 0W-30 or 5W-40 may also be suitable depending on the specific engine and climate.
• Type: Full synthetic oil is required.
• Standard: Look for an oil that meets the BMW LongLife-01 (LL-01) specification. Some newer oils might meet the LL-04 standard, which is also acceptable.
• Amount: Approximately 6.5 quarts (or liters) for N55 engines, but always verify the exact amount needed for your model. 

How to verify

• Owner’s Manual: This is the most reliable source for the correct oil type and amount. 
• Oil Cap: Some models list the required oil specification on the oil cap itself. 
• Online Resources: You can also check reputable online auto parts stores or forums for recommendations based on your specific model year.