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There are more than 1,000 Q&As and DIY guides posted here. Feel free to search by keyword (upper right), browse by category (lower right), or watch one of our helpful videos. Once you've found the answer to your question, you can get the parts you need in our online store – www.BavAuto.com.

How Do I Know if I Have an N51 or N52 BMW 6-Cylinder Engine?

Dec 14 16

The late model non-M, non-turbocharged, BMW 6-cylinder engines used in the US market BMW 1, 3, 5, x and Z models from the late 2000s through mid 2000-teens, were produced in two variants for US distribution, known as the N51 and N52.  The N52 is the standard Low (or UL – Ultra Low) Emissions Vehicle (LEV or ULEV) version and the N51 is the Super Ultra Low Emissions Vehicle (SULEV) version intended for states that employ the most stringent vehicle emissions standards.  In the US, the N51 was installed in various 128i, 128ic, 328i, 328xi and 328ic models.

States that received vehicles with the N51 engine include; Arizona, California, Connecticut, District of Columbia, Maine, Maryland, Massachusetts, New Jersey, New Mexico, New York, Oregon, Pennsylvania, Rhode Island, Vermont and Washington.  Don’t be surprised to find N52 models registered in these states … or …. N51 models in the other states.

Why should you know whether your BMW has an N51 or an N52 engine?  When ordering engine, emissions, fuel system and some other parts, you will need to clarify if you have the N51 or the N52.  Failure to do so may very well result in the wrong parts being ordered.

Click HERE to order parts for your N51 or N52 BMW.

So, how do you know which engine you have?

1)  You can share the VIN with the BAVauto advisors, who can then use the VIN to verify the engine in your BMW.

2) Under the engine hood, the emissions control information sticker will note if the vehicle is a LEV or ULEV (N52) or SULEV (N51).  The sticker is often on the underside of the hood itself.

How Do I Know if I Have an N20 or N26 Turbocharged BMW 4 Cylinder Engine?

Dec 14 16

The late model BMW turbocharged 2.0 liter engines (TwinPower Turbo) used in the US market BMW 1, 2, 3, 4, 5, X and Z series models are produced in two variants for US distribution, known as the N20 and N26.  The N20 is the standard Ultra Low Emissions Vehicle (ULEV) version and the N26 is the Super Ultra Low Emissions Vehicle (SULEV) version intended for states that employ the most stringent vehicle emissions standards.

States that receive vehicles with the N26 engine include; Arizona, California, Connecticut, District of Columbia, Maine, Maryland, Massachusetts, New Jersey, New Mexico, New York, Oregon, Pennsylvania, Rhode Island, Vermont and Washington.  While it is likely that most  BMW N20/N26 models sold in these states will be equipped with the N26, don’t be surprised to find N20 models registered in these states … or …. N26 models in the other states.

Why should you know whether your BMW has an N20 or an N26 engine?  When ordering engine, emissions, fuel system and some other parts, you will need to clarify if you have the N20 or the N26.  Failure to do so may very well result in the wrong parts being ordered.

Click HERE to order parts for your N20 or N26 BMW.

So, how do you know which engine you have?

1)  You can share the VIN with the BAVauto advisors, who can then use the VIN to verify the engine in your BMW.

2) Under the engine hood, the emissions control information sticker will note if the vehicle is a ULEV (N20) or SULEV (N26).  The sticker is often on the underside of the hood itself.


Liqui Moly 5w-30 Synthetic Oils – Longtime, Top Tec, Special Tec – Which One For My BMW or MINI?

Dec 13 16

BAVauto has been importing, selling and using Liqui Moly motor oils for more than a quarter century and there’s a reason we have been doing so.  The Liqui Moly company was conceived and built by chemical engineers who knew the anti-wear properties of Molybdenum Disulfide (MoS2) and had the vision to create the best anti-wear additives available for engines and gearboxes.  From this starting point, Liqui Moly’s chemical engineers have created top-shelf synthetic and petroleum based lubricant and additive products that continually receive awards.  Add to this, that BMW in Europe specifically approves Liqui Moly for use in all models.

CLICK HERE for some of the articles we have written, detailing the use of Liqui Moly products and well as customer testimonials.

While, there are many motor oils that meet the minimal specifications for use in BMWs and MINIs, many BMW and MINI owners prefer to adhere to the BMW specific “Longlife” requirements, to include; the obsolete Longlife-98 and the current Longlife-01 and Longlife-04 specifications.  In reference to these specs, there has been some level of confusion.  Let’s take a quick look at the three Longlife specs:

Longlife-98 (LL-98):
BMW longlife (extended oil change intervals) approved oils.  Typically called out for BMWs through 2001.  Superceded to Longlife-01.

Longlife-01 (LL-01):
BMW longlife approved synthetic technology oils. Typically called out for BMWs and MINIs 2002 on (with some exceptions).  Also for use where LL-98 was originally called for.

Longlife-04 (LL-04):
BMW longlife approved synthetic technology oils. Low SAP (Sulfur, Ash, Particulates) formulation, required for Diesel models with Diesel Particulate Filters (DPF).  Can be used in BMW and MINI gas and diesel engines where LL-98 or LL-01 is called for.

At BAVauto®, we offer three Liqui Moly 5w-30 Longlife specification motor oils. These oils are of the recommended 5w-30 weight and meet (and exceed) the BMW and MINI LL-01 or LL-04 guidelines.  Here’s a quick breakdown to help you make a decision on which Liqui Moly Longlife oil is best for your personal use in your BMW or MINI.

Longtime High Tech 5w-30, Part Numbers – 1136/1137LM:
This Liqui Moly LL-04 synthetic technology oil is made in Germany and approved by BMW in Europe. Its formula reduces friction and wear for better engine protection, gas mileage, and performance. Longtime High Tech 5w-30  has excellent cleaning  (detergent) and dirt suspending properties to assure engine contaminants are removed and deposited in the oil filter, not continually circulated through the engine. Longtime High Tech 5w-30 carries the BMW Longlife-04 approval for use in BMW and MINI gasoline and diesel engines and meets requirements for low SAP (Sulfur, Ash, Particulates) oil for use in BMW diesels with Diesel Particulate Filters (DPF).

Click image below for Longtime High Tech 5w-30:

Special Tec 5w-30, Part Numbers – 2248/2249:
This Liqui Moly LL-01 full synthetic oil is made in Germany and approved by BMW in Europe.  Liqui Moly’s fully synthetic formula offers the best engine wear protection and fastest cold-start oil flow, minimizing engine cold-start wear.  Excellent detergent and suspension properties help to clean internal engine surfaces and assure that impurities are deposited in the oil filter.  Special Tec LL 5w-30 carries the BMW Longlife-01 approval for use in BMW and MINI gasoline engines, including those calling for the older LL-98, turbocharged M-series engines,  and diesels without Diesel Particulate Filters (DPF).  The increased lubricity and anti-wear properties of Liqui-Moly fully synthetic Special Tec LL 5w-30 assures maximum engine life and performance.

Click image below for Special Tec 5w-30:

Top Tec 4600 5w-30, Part Numbers – 3755/3756:
This Liqui Moly LL-04 synthetic technology oil is made in Germany and approved by BMW in Europe. Its formula reduces friction and wear for better engine protection, gas mileage, and performance.  TopTec 4600 5w-30 is the latest synthetic technology formulation, from Liqui Moly, that carries the BMW Longlife-04 approval.  TopTec 4600 5w-30 offers excellent anti-wear properties while reducing oil consumption and improving fuel economy.  TopTec 4600 5w-30 is approved for use in BMW and MINI gasoline and diesel engines, including those with  valvetronics and turbochargers.  TopTec 4600 5w-30 is a low SAP (Sulfur, Ash, Particulates) formulation and is fully approved for use in diesels with Diesel Particulate Filters (DPF).  This applies to all US BMW diesels except the 524td.

Click image below for Top Tec 4600 5w-30:

 

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