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What is Mercedes 229.51 oil?

Discover what Mercedes 229.51 oil is, its properties and the types of vehicles that uses it. MyCar.Repair UK provides you with all the information you need.

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Which models need Mercedes 229.51 oil?

Mercedes-Benz 229.51 oil specification is recommended for use in certain diesel engine models of Mercedes-Benz, specifically those that are equipped with a diesel particulate filter (DPF) and/or a catalytic converter.

Which Mercedes needs 229.51 oil?

The 229.51 specification is typically recommended for use in the following diesel engine models:

  • OM 642 and OM 651

  • M 271 DE 18 AL

  • M 272 E 18 ML

  • M 273 E 32 ML

  • M 274 DE 20 AL

  • M 276 DE 20 LA

Best engine oils for 229.51 standard

There are several high-quality engine oils that meet the Mercedes-Benz 229.51 specification, which is recommended for use in certain diesel engine models of Mercedes-Benz, specifically those that are equipped with a diesel particulate filter (DPF) and/or a catalytic converter.

Best engine oils for 229.51 standard for Mercedes-Benz: LIQUI MOLY Leichtlauf High Tech 5W40 is an excellent engine oil

Examples of engine oils that meet the 229.51 specification include:

  • LIQUI MOLY Leichtlauf High Tech 5W-40

  • LIQUI MOLY Leichtlauf High Tech 5W-30

  • LIQUI MOLY Top Tec 4200 5W-30

  • Mobil 1 ESP Formula 5W-30

  • Castrol Edge Professional LongLife III 5W-30

  • Shell Helix Ultra Professional AG 5W-30

  • Valvoline Advanced Full Synthetic Diesel Motor Oil 5W-40

  • TOTAL QUARTZ INEO MC3 5W-30

LIQUI MOLY oils that meet the 229.51 specifications include:

Is 229.51 oil fully synthetic?

The Mercedes-Benz 229.51 oil specification is typically a synthetic or synthetic blend oil. It means it’s a combination of synthetic base stocks and mineral oils.

Synthetic oil is engineered to provide enhanced performance, compared to conventional mineral oils. They have a better thermal and oxidation stability, which leads to longer oil life, improved engine protection and better fuel efficiency. They also perform well under extreme temperatures, which can help to extend the life of the engine.

Fully synthetic 229.51 engine oil for Mercedes: LIQUI MOLY Top Tec 4200 5W30

It’s important to note that, synthetic blend oils, which are a blend of synthetic and mineral oils, often provide a balance of the benefits of synthetic oils with the lower cost of mineral oils.

It’s always good to check the owner manual for the correct oil specification for your vehicle and to consult with a Mercedes-Benz dealer to ensure that you are using the appropriate oil for your specific make and model.

Mercedes-Benz oil standards

Mercedes-Benz, like many other car manufacturers, has a variety of engine oil specifications that are recommended for use in their vehicles. Some of the most common Mercedes-Benz oil standards include:

  • MB 229.1 – This is a mineral oil-based oil that is recommended for use in older petrol engines.

  • MB 229.3 – This is a synthetic blend oil that is recommended for use in certain petrol engines.

  • MB 229.5 – This is a synthetic oil that is recommended for use in certain diesel engines.

  • MB 229.51 – This is a synthetic or synthetic blend oil that is recommended for use in diesel engines that are equipped with a diesel particulate filter (DPF) and/or a catalytic converter.

  • MB 229.52 – This is a synthetic oil that is recommended for use in certain gasoline engines that are equipped with a catalytic converter.

  • MB 229.6 – This is a synthetic oil that is recommended for use in certain hybrid and electric vehicles.

  • MB 229.71 – This is a synthetic oil that is recommended for use in certain diesel engines that are equipped with a diesel particulate filter (DPF) and/or a catalytic converter, and also meet the MB 229.31 standard.

How often does a Mercedes need an oil change in the UK?

The recommended oil change interval for a Mercedes-Benz vehicle can vary depending on the model and the type of engine oil being used. In general, Mercedes-Benz recommends that the oil in its vehicles be changed every 10,000 miles or 12 months, whichever comes first, under normal driving conditions. However, this can be extended to up to 15,000 miles or 24 months, whichever comes first, if the vehicle is driven in severe conditions or if the vehicle is equipped with the latest generation of engines and meets the MB 229.31 standard.

How often does a Mercedes need an oil change in the UK?

It’s important to note that the recommended oil change interval for your specific Mercedes-Benz model can be found in the owner’s manual and also can be confirmed by a Mercedes-Benz dealer. Additionally, it’s always good to check the oil level and condition regularly, especially if you drive in severe conditions, such as high temperatures, heavy traffic, and frequent short trips, which can cause the oil to degrade more quickly.

How can I change the engine oil of my Mercedes?

We have written several tutorials for changing oil in specific Mercedes models:

Mercedes Benz E350

Mercedes Benz G-Class

Mercedes Benz SLK 200 Roadster

We’ve also included a simple step-by-step guide you could follow for most models below.

Changing the engine oil of a Mercedes-Benz vehicle is a relatively simple process, and can be done in a few basic steps:

  1. Locate the oil drain plug: This is typically located on the bottom of the oil pan, and can be accessed by crawling under the vehicle.

  2. Drain the oil: Use a wrench to remove the drain plug and allow the oil to drain into a container. Be sure to dispose of the used oil properly, according to local regulations.

  3. Replace the oil filter: Locate the oil filter, usually located near the oil pan and remove it. Replace it with a new oil filter, and make sure to lubricate the rubber seal before installing it.

    Replace the oil filter at every engine oil change
  4. Refill with new oil: Use a funnel to pour the new oil into the engine, and check the oil level with the dipstick.

    Refill the new oil into the Mercedes engine and make sure you are not overfilling the oil tank
  5. Start the engine: Start the engine and let it run for a few minutes, then turn it off and recheck the oil level. Add more oil if necessary.

    Check after filling the oil if the oil level is correct

It’s important to note that some steps may vary depending on the specific model and engine type of your Mercedes-Benz vehicle. It’s always best to refer to your vehicle’s owner’s manual or consult with a Mercedes-Benz dealer for specific instructions on how to change the oil in your vehicle. Additionally, If you are not comfortable with performing the task yourself, it’s always a good idea to have a professional mechanic change the oil for you.

Frequently Asked Questions about 229.51 Mercedes oil

What is Mercedes 229.51 oil?

Mercedes 229.51 oil is a specification typically used for certain diesel engine models of Mercedes-Benz, especially those equipped with a diesel particulate filter (DPF) and/or a catalytic converter.

Which Mercedes models require the use of 229.51 oil?

The Mercedes diesel engine models that typically require 229.51 oil include OM 642, OM 651, M 271 DE 18 AL, M 272 E 18 ML, M 273 E 32 ML, M 274 DE 20 AL, and M 276 DE 20 LA.

Is the Mercedes 229.51 oil specification fully synthetic?

The Mercedes-Benz 229.51 oil specification is typically a synthetic or synthetic blend oil, which is a combination of synthetic base stocks and mineral oils.

How often does a Mercedes-Benz vehicle need an oil change in the UK?

Generally, Mercedes-Benz recommends changing the oil every 10,000 miles or 12 months, whichever comes first, under normal driving conditions. This can extend to 15,000 miles or 24 months if the vehicle is driven under severe conditions or meets the MB 229.31 standard.

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