On this blog, we have written extensively about BMWs, their capabilities, and maintenance. Today we discuss the oil of the BMW 335i. Let’s start with a quick answer:
For the BMW 335i, universally recommended oils include BMW Longlife-01 or BMW Longlife-01 FE for the gasoline engines. For the diesel engines, BMW recommends BMW Longlife-04 or API ILSAC GF-5 (2013 model only). Each generation has 2-3 different alternatives, such as Longlife-98 or API SM.
However, that doesn’t answer the question fully. Each generation has its own specific needs and limitations. Furthermore, you also need to know the weight of the oil, the capacity, how to check the engine oil level, and how to refill it. We’ll discuss all of this in this blog, so read on!
Oil Types Per Generation
- For the 2008 and 2009 BMW 335i recommended engine oils include: BMW Longlife-01, BMW Longlife-01 FE or BMW Longlife-04 for the gasoline engines. Alternatively these engines can also use BMW Longlife-98 or API SM (or higher). For the 335i with a diesel engine BMW Longlife-04 is recommended.
- For the 2010 and 2011 BMW 335i recommended engine oils include: BMW Longlife-01, BMW Longlife-01 FE or BMW Longlife-04 for the gasoline engines. Alternatively these engines can also use API SM (or higher). For the 335i with a diesel engine BMW Longlife-04 is recommended.
- For the 2012 BMW 335i recommended engine oils include: BMW High Performance SAE 5W-30, BMW Longlife-01 or BMW Longlife-01 FE for the gasoline engines. Alternatively these engines can also use API SM (or higher).
- For the 2013 BMW 335i recommended engine oils include: BMW Longlife-01 or BMW Longlife-01 FE for the gasoline engines. Alternatively the gasoline engine can use API SM (or higher) whereas the diesel engine can use API ILSAC GF-5.
Furthermore, It’s important to know that BMW oil is made by BP (which sells it under the brand name of Castrol). The BMW oil that you buy online or in the store is therefore just rebranded Castrol oil. A bit further down in this blog, you can read why BMW recommends Castrol.
However, this doesn’t mean that your 335i isn’t able to take oils of other suppliers. Suppose you’re not in the position to get BMW/Castrol oil, then please use the recommended viscosity of oil for your 335i. You’ll find this in the next subheading.
What’s The Oil Weight Of The 335i?
- Approved engine oils for the 2008 BMW 335i have a viscosity rating of 5W-40 and 5W-30.
- Approved engine oils for the 2009 BMW 335i have a viscosity rating of 0W-40, 0W-30, 5W-40 and 5W-30 SAE.
- Approved engine oils for the 2010 – 2013 BMW 335i have a viscosity rating of 0W-40 SAE, 0W-30 SAE, 5W-40 SAE and 5W-30 SAE.
Please note that SAE stands for ‘Society of Automotive Engineers’. This addition means that this society has classified the engine oil. It doesn’t structurally change the type of oil (e.g., 5W-40 and 5W-40 SAE are chemically the same).
What’s The Oil Capacity Of The 335i?
All BMW 335i’s have an oil capacity of 6.9 quarts (6.5 liters) with the oil filter. BMW used two different engines for the 335i, namely the N54 and the N55 B30; they have the same oil capacity of 6.9 quarts.
After refilling some 335i, owners noticed that their oil level read that it was only 3/4th of the way full. Many argue that the 335i could potentially take 8 quarts of engine oil. However, this is not recommended. Always follow the instructions in the owner’s manual, which, in this case, is 6.9 quarts.
Why Does My 335i Say That Castrol Is Recommended?
If you own a 335i, or when you read the owner’s manual of this car, you’ll notice that there are several points where BMW says they recommend Castrol for your car. This is because Castrol was the official sponsor of the BMW F1 team during this period of time.
This meant that BMW had to push Castrol as the suggested oil of choice on their models. However, this does not mean that other oil suppliers wouldn’t work with your car. As long as they adhere to the general specifications above, all major oil brands should work fine with your 335i.
How To Check The Engine Oil Level On The 335i?
Checking the engine oil of your 335i is, of course, necessary before you replace the engine oil. Checking this level is done electronically via the operating system of the car. However, please note that this process is different for the 2008 – 2011 335i and the 2012 – 2013 335i.
Engine Oil Level Check 2008 – 2011 BMW 335i
Engine Oil Level Check 2012 – 2013 BMW 335i
How To Refill Engine Oil BMW 335i?
When refilling the engine oil of the BMW 335i, BMW recommends that you only refill 1 US quart/liter at a time. After this, recheck the engine oil. This is done to prevent overfilling, which could potentially damage the engine. Furthermore, BMW has also placed some general warnings for refilling engine oil:
- Add oil within the next 125 miles/200 km when the ‘engine oil level’ signal is displayed.
Otherwise, the engine may be damaged.
- Do not add too much engine oil. When too much engine oil is added, immediately have the vehicle checked, otherwise, this may cause engine damage.
- Keep oil, grease, etc., out of reach of children and heed the warnings on the containers to prevent health risks.