Engine oils

Ford WSS-M2C912-A1
Also close in properties to ACEA A1 / B standards.

Ford WSS-M2C913-A
Engine oil, initial and maintenance fill, SAE 5W-30. This specification meets ILSAC GF-2 and ACEA A1-98 and B1-98 and additional Ford requirements.

Ford WSS-M2C913-B
The Ford M2C913-B specification has been released in Europe for spark-ignition gasoline and compression-ignition diesel engines used for the lubrication of gasoline-powered engines. The specification is also used to define engine oils for servicing Ford engines, where applicable. The oil must meet all ILSAC GF-2 and GF-3 specifications, ACEA A1-98 and B1-98 specifications, and Ford's additional requirements.

Ford WSS-M2C913-C
Fully backward compatible and is highly recommended for all engines currently requiring the Ford M2C913-B specification. The new engine oil offers a variety of benefits to the customer, such as improved fuel economy benefits and high resistance to biodiesel fuels.

Ford WSS-M2C913-D
Introduced in 2012, oils meeting the specification are recommended for all Ford diesel engines, except for Ford Ka TDCi models manufactured before 2009 and Ford Galaxy 1.9 TDi models manufactured between 2000 and 2006. A product meeting this specification is particularly recommended for diesel engines where M2C913-B or M2C913-C oils were originally required. Oil meeting this specification must be used in Ford Transit vehicles manufactured from 2012 with the Duratorq 2.2 engine. Oils meeting this specification can be used with extended oil change intervals and are also suitable for use in engines running on biodiesel or high sulphur diesel. The standard allows full backward compatibility with previous FORD 913 specifications, meaning that if WSS M2C 913 A, M2C 913 B or M2C 913 C is required, then an oil with the WSS-M2C913-D specification can also be used.

Ford WSS-M2C917-A
Viscosity SAE 5W40 engine oil for pump injection diesel engines.

Ford WSS-M2C934-A
For vehicles with diesel engines with extended oil change intervals equipped with a diesel particulate filter (DPF).

Ford WSS-M2C937-A
Special engine oil for Ford Focus RS. Viscosity should be SAE 0W-40
.
Ford WSS-M2C948-B
Based largely on the ACEA C2 oil series, this specification calls for a 5W20 oil with a low SAPS level and is primarily intended for the 1.0-liter three-cylinder EcoBoost engine. Includes fuel economy and piston seat management. Oils meeting this specification must improve fuel economy by 0.9% compared to a standard 5W-20 oil.

Ford WSS-M2C950-A
Special engine oil for Ford Focus Diesel 2.0 models manufactured from September 2014 and Ford Mondeo Diesel 2.0 models manufactured from 2015. Viscosity should be SAE 0W-30.

Transmission Fluids

Ford 8U7J-19G518-BA
Special transmission oil for Ford Kuga transmission.

Ford 8U7J-8708687-AA
Special transmission oil for Haldex clutches.

Ford M2C104-A
SAE 90 mechanical transmission oil with EP additive and friction modifier.

Ford M2C175-A
API GL-4 class, SAE 80W90 transmission oil for Ford N transmissions manufactured before 1990.

Ford M2C186-A
Friction modified gear oil for Ford MT75 transmissions.

Ford M2C192-A
SAE 75W140 grade hypoid gear oil for conventional and limited slip rear differentials.

Ford M2C192-A + M2C118-A
Synthetic hypoid gear oil with friction modifier.

Ford M2C197-A
EP hypoid differential oil.

Ford M2C197-A + M2C118-A
Special formulation for Trac-Lok rear axles.

Ford M2C200-B
Synthetic, SAE 75W90 grade, API GL-4 or GL-5 hypoid gear oil with extreme pressure (EP) properties.

Ford M2C200-C
Synthetic gear oils based on polyalphaolefin (PAO).

Ford M2C200-D
Synthetic gear oil based on polyalphaolefin (PAO) with viscosity modifier and extreme pressure (EP) additive.

Ford M2C201-A
Thermal stable hypoid gear oil for differentials. Meets MIL-L-2105D and API GL-5

Ford M2C918-A
SAE 75W90 grade synthetic gear oil for rear differentials.

Ford M2C936-A
Special gear oil for dual clutch transmissions.

Ford M2C94-A
SAE 80W90 or 80W grade multi-purpose hypoid gear oil. Meets API GL-5 and MIL-L-2105C.

Ford N052145 VX00
VW G 052 145 equivalent Ford specification. Fully synthetic, meets API GL-4 and SAE 75W90 requirements.

Automatic transmission fluids

Ford Mercon
Automatic transmission fluid specification for use in Ford automatic transmissions.

Forc Mercon V
Ford Mercon V specification. Automatic transmission fluid with improved protection against rust, corrosion, deposits and wear. It improves low temperature shifting and protects against transmission shake. Mercon V is fully backward compatible with Mercon.
 

The Ultimate Guide: Which Engine Oil Is Right for Your Ford? From Specifications to Models

Choosing engine oil is no longer as simple as “grabbing any 5W-30 off the shelf.” This is especially true for Ford vehicles. Over the past two decades, Ford has made a major technological leap, introducing award-winning EcoBoost gasoline engines and increasingly sophisticated diesel engines with advanced exhaust aftertreatment systems. These engineering achievements require more than just a “slippery substance” in the oil sump—they require a precisely formulated fluid that is an integral part of the engine.

Many car owners find themselves confused in front of the oil shelf. Why does Ford need a special oil? What happens if I use the wrong one? What do those strange codes like WSS-M2C913-D actually mean? In this comprehensive guide, we break down the world of Ford engine oils, decode the “secret language” of specifications, and help you find the engine oil best suited to your specific Ford model to ensure long engine life and maximum performance.

Why are Ford engines so demanding when it comes to engine oil?

Before we dive into numbers and codes, it’s important to understand the “why.” Why doesn’t the same oil work in a Ford Focus as, for example, in an older Volkswagen, even if the viscosity grade (e.g. 5W-30) is the same?

The answer lies in engine design and materials. Ford has engineered its engines to operate with very specific tolerances and at defined operating temperatures. Here are two key reasons why choosing the correct specification is a matter of life and death for Ford engines:

1. EcoBoost and “Wet Belt” technology

Many of Ford’s award-winning 1.0-liter engines and some larger EcoBoost engines use an innovative solution in which the timing belt runs directly in the engine oil. This helps reduce friction and noise while improving fuel efficiency.

However, this design places extreme demands on the engine oil. The oil must not contain certain additives that could degrade the rubber and composite materials of the belt. If the wrong oil is used in these engines (even if it is a premium fully synthetic oil but without the correct Ford approval), the timing belt can literally begin to dissolve. Debris from the belt clogs the oil pickup screen, oil pressure is lost, and the result is catastrophic engine failure, often requiring complete engine replacement. For this reason, strictly following the manufacturer’s specification is critical for EcoBoost engines.

2. Diesel engines and exhaust aftertreatment (DPF)

Modern Ford diesel engines (TDCi, EcoBlue) are equipped with complex exhaust aftertreatment systems, including diesel particulate filters (DPF). These filters are extremely sensitive to ash produced during oil combustion.

During engine operation, a small amount of oil inevitably enters the combustion chamber. If the oil is not of the so-called “Low SAPS” type (low sulphated ash, phosphorus, and sulphur content), it produces a large amount of ash when burned. This ash accumulates in the DPF and, unlike normal soot, cannot be burned off during regeneration. The result is a rapidly clogged DPF, expensive repair bills, increased fuel consumption, and reduced engine performance. Ford’s diesel engine specifications ensure that the oil’s chemical formulation is DPF-friendly.

Ford’s “Secret Language”: Decoding WSS-M2C Specifications

When you look at the back of an oil bottle, you’ll see many different abbreviations such as API SN, ACEA C3, and so on. These are general industry standards. As a Ford owner, however, you need to look for something else – Ford’s own factory approval.

Ford’s oil standards always begin with the designation WSS-M2C, followed by a three-digit number and a letter. This code is your guarantee that the oil has been tested and approved for use in a specific Ford engine. Let’s take a closer look at the most common and important modern specifications.

1. Ford WSS-M2C913-D (Often 5W-30)

This is probably the most common Ford specification encountered on the road. It is the so-called “workhorse” standard.

• What is it? A fully synthetic, fuel-efficient engine oil. This specification replaced and consolidated the earlier 913-A, 913-B, and 913-C specifications.
• Who is it for? It is the primary choice for most Ford diesel engines (TDCi) from around 2009 up to the newer EcoBlue engines (which require a different standard). It is also suitable for many older gasoline engines (Duratec) that are not EcoBoost engines.
• Why is it good? This oil is designed to provide good wear protection while keeping internal engine friction low to ensure fuel efficiency. It is a very stable oil suitable for extended service intervals.

2. Ford WSS-M2C948-B (Mostly 5W-20)

This is a specification every EcoBoost engine owner should know by heart.

• What is it? A specially developed ultra-low-viscosity (5W-20) engine oil.
• Who is it for? It is MANDATORY for nearly all Ford gasoline EcoBoost models (especially the 1.0L three-cylinder engines, but also many 1.5L, 1.6L, and 2.0L versions).
• Why is it critical? As mentioned earlier, this oil is chemically formulated to be safe for the “wet” timing belts that run inside the engine oil. Using, for example, an older 913-D specification oil here risks complete engine failure. In addition, the 5W-20 viscosity ensures that oil reaches the turbocharger and other critical components quickly during cold starts and helps achieve Ford’s specified low fuel consumption figures.

3. Ford WSS-M2C950-A (Mostly 0W-30)

This is a modern standard for the latest diesel engines.

• What is it? A top-tier fully synthetic engine oil designed for diesel engines that meet the latest Euro 6 emissions standards.
• Who is it for? Primarily newer Ford diesel engines (from around 2014–2015 onward), especially those using AdBlue systems (for example, the newer 1.5L and 2.0L EcoBlue engines in models such as the Mondeo, Focus, and Transit).
• Why is it good? This viscosity grade (0W-30) provides exceptional protection during cold starts, even at very low temperatures. It is specifically optimized to work with the most advanced DPF filters and SCR (AdBlue) catalysts, ensuring long system life and maximum fuel efficiency.

Choosing Oil by Popular Ford Models

Theory is good, but let’s look at some practical examples. What oil do the most common Ford models on Estonian roads need? NB! The following is a general guide. Always check your owner’s manual or ask a specialist for confirmation, as requirements may vary depending on the year of manufacture and the specific engine code.

Ford Focus and Fiesta

These compact cars are often equipped with EcoBoost gasoline engines.

• EcoBoost gasoline (1.0L, 1.5L): There is no room for compromise here. WSS-M2C948-B (5W-20) oil is required. We emphasize once again – using the wrong oil will damage the timing belt.

• TDCi diesel (1.5L, 1.6L, 2.0L): Older models (up to around 2014) typically use WSS-M2C913-D (5W-30). Newer Euro 6 diesel engines may already require the newer WSS-M2C950-A (0W-30). Be sure to check based on the model year.

Ford Mondeo, S-Max, and Galaxy

These larger family and executive cars are often long-distance vehicles with diesel engines.

• TDCi diesel (2.0L, 2.2L): A large portion of the previous generation uses the reliable WSS-M2C913-D (5W-30). The latest models (from around 2015 onward), however, have switched to WSS-M2C950-A (0W-30) to meet stricter emissions regulations.

• EcoBoost gasoline (1.5L, 2.0L): The rule also applies here – EcoBoost engines generally require WSS-M2C948-B (5W-20), although some early larger EcoBoost engines may have allowed the use of 913-D. It is always safest to check.

Ford Kuga and Puma

Popular SUVs that share engines with the Focus and Fiesta.

• Puma: Most commonly equipped with the 1.0L EcoBoost (often mild hybrid). It strictly requires WSS-M2C948-B (5W-20).

• Kuga: Older diesel engines use 913-D. Newer diesel engines and the gasoline engines in plug-in hybrids may require newer specifications. Be especially careful with newer Kuga models and always check the owner’s manual.

Ford Transit and Transit Custom

Workhorses that rack up high mileage and operate under tough conditions.

• TDCi / EcoBlue diesel (2.2L, 2.0L): For Transit models, using the correct oil is critical for the longevity of the turbocharger and the DPF. Older 2.2L engines widely used WSS-M2C913-D (5W-30). The newer 2.0L EcoBlue engines (the “Panther” engine family) strictly require WSS-M2C950-A (0W-30) oil. With the Transit in particular, it is important not to experiment, as operating loads are high.

Trusted Oil Brands for Ford

Once you’ve determined which WSS specification your car requires, the next question arises: which brand should you choose? Is more expensive always better?

The truth is that the most important factor is Ford approval. If the oil container lists the correct WSS code, it means Ford has approved that oil’s formulation. That said, there are differences between brands in the quality of base oils and additive packages used, which can affect the oil’s long-term stability.

Here are some well-regarded brands that produce high-quality oils meeting Ford specifications:

Castrol: Historically Ford’s closest partner in lubricants. For years, Ford engines have been developed in cooperation with Castrol, and many Ford oil filler caps even feature the Castrol logo. The Castrol Magnatec and Edge ranges include a wide selection of products specifically designed for Ford (often marked “Professional” or with special labeling). These oils are engineered to provide maximum protection from the moment the engine starts.
Mobil 1: A globally recognized pioneer of synthetic oils. Mobil offers excellent oils that meet Ford’s demanding standards, providing exceptional thermal stability and protection under severe conditions.
Shell (Helix): Another energy giant whose product range includes oils meeting Ford specifications. Their PurePlus technology (base oil produced from natural gas) ensures an exceptionally clean and stable oil.
Total and Valvoline / Liqui Moly: These large and reliable manufacturers also offer dedicated product lines formulated to meet Ford WSS standards, delivering a good balance of price and quality along with dependable protection.

Note: Don’t choose oil by brand—choose by specification. Always make sure that the specific product from the chosen brand clearly states the required Ford approval on the packaging.
 

Conclusion: Don’t take risks—choose the right code

Choosing engine oil for your Ford may seem complicated, but in reality it comes down to one simple rule: follow the WSS specification.

Forget outdated beliefs like “diesels always use 10W-40” or “any fully synthetic oil is fine for gasoline engines.” Modern Ford engines—whether the fuel-efficient EcoBoost or the powerful TDCi—are precision instruments. Using the wrong oil may not show immediate symptoms, but it will inevitably lead to problems: a clogged DPF, a failed “wet belt,” a damaged turbocharger, or simply higher fuel consumption and a shorter engine lifespan.

The investment in the correct, Ford-approved oil is negligible compared to the cost of engine repairs. Do your homework, check the owner’s manual, identify the correct WSS code, and choose an oil from a trusted manufacturer. Your Ford will thank you with long, trouble-free miles.

Here you’ll find Ford original oils!

Here you can find the right engine oil for your Ford based on your vehicle’s details!