For the 2012 Mercedes Benz ML350 with the 3.0L 6-cylinder engine (Code 642.826 N Diesel Turbo), the oil capacity is 8.5 quarts with a filter change. Recommended viscosities include 0W-30 or 0W-40 for all temperatures, and 5W-30, 5W-40, or 5W-50 for temperatures above -25°C. AMSOIL recommends AMSOIL 0W-30 MS 100% Synthetic European Motor Oil (EOTQT-EA) and the MANN-FILTERS HU821X-EA oil filter.
What oil does a 2012 Mercedes Benz ML350 Diesel take?
The 2012 Mercedes Benz ML350 with the 642.826 N engine requires specific viscosities to ensure proper lubrication and protection of the turbocharger and emissions systems. The AMSOIL lookup provides several options depending on your operating environment.
AMSOIL product recommendations
Based on the AMSOIL lookup for your Mercedes BlueTEC diesel, here are the recommended products to maintain engine and component health.
| Component | Product Name | Part Code |
|---|---|---|
| Engine Oil | AMSOIL 0W-30 MS 100% Synthetic European Motor Oil | EOTQT-EA |
| Oil Filter | MANN-FILTERS Oil Filter | HU821X-EA |
| Antifreeze/Coolant | AMSOIL Passenger Car & Light Truck Antifreeze & Coolant | ANTPC1G-EA |
| Antifreeze/Coolant | AMSOIL Propylene Glycol Antifreeze and Engine Coolant | ANT1G-EA |
| Automatic Transmission Fluid | AMSOIL Signature Series Fuel-Efficient 100% Synthetic ATF | ATLPK-EA |
| Automatic Transmission Fluid | AMSOIL OE Fuel-Efficient 100% Synthetic ATF | OTLQT-EA |
Engine Oil Viscosity Options
| Condition | Viscosity |
|---|---|
| All Temperatures | 0W-30, 0W-40 |
| Above -25°C | 5W-30, 5W-40, 5W-50 |
AMSOIL lookup oil grade: SEO59
Engine Oil Capacity
| Description | Capacity |
|---|---|
| With filter change | 8.5 quarts |
Note: After refill, always check the oil level.
Oil Drain Plug Torque Specification
| Component | Size/Type | Torque |
|---|---|---|
| Oil Drain Plug | 24 MM Plug | 33 ft/lbs |
What oil filter should I use?
For this vehicle, the AMSOIL lookup recommends a MANN-FILTERS Oil Filter. Using high-quality media helps reduce engine wear and allows for OEM drain intervals.
| Brand | Part Number |
|---|---|
| MANN-FILTERS | HU821X-EA |
Automatic Transmission and Transfer Case Fluids
The transmission requirements for the ML350 depend on your specific datacard code (A89). Proper fluid selection is vital for smooth shifting and protection against heat.
Transmission Fluid Specifications
- Without A89 Code: Red in color. Total fill capacity for 7-speed 722.9 is 9.5 quarts.
- With A89 Code (Reduced-Friction): Blue in color. Total fill capacity for 7-speed 722.9 is 9.5 quarts.
Transfer Case Lubricant
| Configuration | Capacity |
|---|---|
| Double speed | 3.2 pints |
| Single speed | 1.1 pints |
| Front | 1.7 pints |
For these applications, AMSOIL lists ATLPK-EA and OTLQT-EA.
Coolant Specifications and Capacity
Maintaining the cooling system is critical for diesel engine longevity. The 2012 ML350 has a coolant capacity of 12.2 quarts.
| Product | Type/Notes |
|---|---|
| ANTPC1G-EA | 50/50 Pre-mix (OAT formulation) |
| ANT1G-EA | Concentrated (Requires mixing with distilled water) |
Common diesel oil-related concerns and how AMSOIL products may help
| Concern | Why it matters | AMSOIL product | How it may help | Limitation |
|---|---|---|---|---|
| Emissions System Health | BlueTEC systems are sensitive to oil additives. | EOTQT-EA | Designed for exceptional protection without harming emissions systems. | Does not repair existing damage. |
| High Operating Temps | Diesel engines and turbos generate significant heat. | ATLPK-EA | Withstands rigors of elevated temperatures and heavy towing. | Requires regular monitoring. |
| Cold Weather Starts | Thick oil can cause wear during startup in cold climates. | EOTQT-EA | Provides 0W viscosity for better flow at low temperatures. | Check local temp requirements. |
Diesel maintenance notes for this vehicle
The OM642 engine is a high-pressure common rail system operating at approximately 1,600 bar. Because of this high pressure, fuel quality and filtration are paramount to prevent injector wear. Owners should monitor dashboard alerts related to AdBlue levels or NOx sensor malfunctions. Additionally, the BlueTEC technology suite incorporates advanced NOx reduction systems; maintaining these components is critical for regulatory compliance.
Common maintenance concerns for this vehicle
Owners of the 2012 ML350 Diesel should be aware of several key areas:
- Emissions Systems: Monitor the health of the BlueTEC components, including the particulate filter and urea injection systems.
- Fuel Quality: High-pressure injectors require clean fuel to prevent premature wear.
- Active Curve System (ACS): Ensure oil levels in the ACS reservoir are maintained to prevent foaming/leaking issues.
Recall, TSB, and manufacturer communication notes
NHTSA research indicates the following recalls for certain 2012 ML350 models:
- Suspension (ACS): A recall exists regarding the Active Curve System where low oil levels in the reservoir may cause foaming and leaking, potentially increasing fire risk.
- Electrical/Software: A recall was noted for incorrect software in certain control units which could affect airbag deployment during a crash.
Note: Always verify open recalls using your specific VIN through the MBUSA website or an authorized dealer.
About this vehicle
The 2012 Mercedes-Benz ML350 utilizes the OM642 engine family, a significant component in Mercedes-Benz’s diesel lineup. This specific vehicle is equipped with a 3.0L V6 diesel engine (engine code 642 826) featuring common rail direct injection and a variable nozzle turbocharger. The OM642 is characterized by its 72-degree V6 configuration, which employs a counter-rotating balance shaft to mitigate inherent vibrations.
As part of the Mercedes BlueTEC technology suite, this vehicle incorporates advanced NOx reduction systems. Depending on the specific application, BlueTEC technology typically utilizes Selective Catalytic Reduction (SCR) with Diesel Exhaust Fluid (AdBlue) or NOx storage catalysts (DeNOx) combined with a diesel particulate filter (DPF). Owners should be aware that these emissions systems are critical to the vehicle’s operation and regulatory compliance.
The ML-Class represents Mercedes-Benz’s mid-size luxury SUV segment. While the engine architecture is well-established, owners should verify exact chassis designations to ensure precise parts matching during maintenance. Because this is a high-pressure common rail system, maintaining strict adherence to fuel and oil service intervals is highly recommended for long-term reliability.
Common questions about this vehicle’s diesel oil and maintenance
What is the engine oil capacity for my 2012 ML350 Diesel?
The capacity is 8.5 quarts when performing an oil change with a filter replacement.
Which viscosity should I use in cold weather?
For temperatures below -25°C, the AMSOIL lookup suggests using 0W-30 or 0W-40 viscosities.
How do I know if I need red or blue transmission fluid?
This depends on your datacard. If you do NOT have code A89, the fluid is Red. If you DO have the A89 Reduced-Friction code, the fluid is Blue.
Does my ML350 require special coolant?
The vehicle requires a compatible coolant; AMSOIL offers both 50/50 pre-mix (ANTPC1G-EA) and concentrated versions (ANT1G-EA).
Can I use any oil filter?
It is recommended to use a high-quality filter like the MANN-FILTERS HU821X-EA to ensure proper filtration and OEM drain intervals.
How can I verify if my vehicle has an active recall?
You should contact MBUSA customer service or visit their official website to check your specific VIN for any open recalls regarding the ACS system or software updates.
Disclaimer: All information is sourced from provided data. Please verify all capacities, torque specifications, and part numbers against your vehicle’s owner’s manual before performing maintenance.