For the 2008 Mercedes Benz ML320 with the 3.0L 6-cylinder Engine Code 642.940 F Diesel Turbo, the engine oil capacity is 9 quarts (with filter). 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 2008 Mercedes Benz ML320 take?
The 2008 Mercedes Benz ML320 with the 3.0L 6-cylinder diesel engine requires specific viscosities to ensure proper lubrication and protection of the OM642 engine components. The AMSOIL lookup lists several options depending on your operating temperature.
AMSOIL product recommendations
The following AMSOIL products are recommended for your 2008 Mercedes Benz ML320 diesel engine and related systems based on available application data.
| Component | Product Name | Part Number |
|---|---|---|
| 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 |
| Brake Fluid | AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid | BFLVCN-EA |
Engine Oil Specifications
| Detail | Value |
|---|---|
| AMSOIL lookup oil grade | SEO59 |
| Confirmed OEM Specification | Not confirmed from source data |
Engine Oil Viscosity Options
| Condition | Viscosity |
|---|---|
| All Temperatures | 0W-30, 0W-40 |
| Above -25°C | 5W-30, 5W-40, 5W-50 |
How much oil does it take with a filter change?
For the 3.0L diesel engine, the standard capacity is 9 quarts when performing an oil change that includes a new filter. Note that if your model is equipped with an oil cooler and that cooler is drained, additional oil may be required.
Oil Capacity & Torque Specs
| Component | Capacity / Torque |
|---|---|
| Oil Capacity (with filter) | 9 quarts |
| Oil Drain Plug Torque | 22 ft/lbs |
Maintenance Tip: Allow 5 minutes after refilling or turning the engine off before checking the oil level to ensure an accurate reading.
Automatic Transmission Fluid (ATF) Specifications
The transmission requirements for this vehicle depend on the specific datacard code present in your vehicle. There are two distinct configurations for the 722.9 transmission.
Transmission Configuration 1: Without A89 Code
- Notes: Fluid is Red in color.
- Capacity: 7-speed 722.9 Total Fill is 9.5 quarts.
Transmission Configuration 2: With A89 Code (Reduced-Friction)
- Notes: Fluid is Blue in color.
- Capacity: 7-speed 722.9 Total Fill is 9.5 quarts.
Transfer Case Lubricant
For vehicles equipped with a Single Speed transfer case (SL057), specific lubrication is required for the unit.
| Component | Specification/Capacity |
|---|---|
| Transfer Case Capacity | 1.1 pints |
| Drain Plug Torque | 18 ft/lbs |
The AMSOIL lookup lists ATLPK-EA and OTLQT-EA for this application.
Common diesel oil-related concerns and how AMSOIL products may help
Diesel engines like the OM642 face unique stresses including soot loading and high operating temperatures. Proper lubrication is vital for long-term reliability.
| Concern | Why it matters | AMSOIL product from this lookup | How it may help | Important limitation |
|---|---|---|---|---|
| Engine Wear | High-torque diesel combustion increases friction. | EOTQT-EA | Provides exceptional engine protection. | Requires regular intervals. |
| Emissions System Health | Diesel engines use complex SCR/DPF systems. | EOTQT-EA | Designed to protect without harming emissions systems. | Not a repair for failed DPF. |
| Transmission Heat/Wear | Heavy towing can overheat ATF. | ATLPK-EA | Withstands rigors of heavy towing and elevated temperatures. | Does not fix mechanical leaks. |
Diesel maintenance notes for this vehicle
The OM642 engine is a robust 3.0L V6 diesel, but it requires diligent attention to several key areas:
- Fuel System Integrity: Maintaining high fuel quality is critical for the common rail direct injection system.
- Emissions Monitoring: Owners should monitor the particulate filter and NOx reduction systems closely.
- Cooling System: Ensure the cooling system is maintained to protect all metals, gaskets, and hoses.
Common maintenance concerns for this vehicle
Based on technical research, owners of the 2008 ML320 should consider the following:
- Emissions Complexity: The BlueTEC technology involves complex systems (SCR or NOx adsorbers) that require specific care.
- Brake System Integrity: Moisture accumulation in brake booster housings has been noted as a concern in related Mercedes-Benz models.
- Fuel Quality: Diesel engines are sensitive to fuel quality; using additives may help maintain injector health.
Recall, TSB, and manufacturer communication notes
NHTSA research indicates the following recall information for certain 2006-2012 Mercedes-Benz vehicles (including ML-Class):
- Brake Booster Corrosion: Two campaigns (22V315000 and 24V298000) address moisture accumulation in the brake booster housing, which can cause reduced brake performance or failure. Dealers may inspect and replace the brake booster as necessary.
Note: Always verify open recalls by using your specific VIN through an authorized Mercedes-Benz dealer or the NHTSA website.
About this vehicle
The 2008 Mercedes-Benz ML320 is a mid-size luxury SUV belonging to the M-Class lineage. This model is powered by the OM642 engine, a 3.0L V6 diesel powerplant featuring a 72-degree V configuration and aluminum construction. The OM642 was designed to replace older straight-six and straight-five configurations with a modern architecture that includes common rail direct injection and variable nozzle turbocharging.
As part of the Mercedes BlueTEC technology family, this vehicle utilizes advanced emissions control systems. Depending on the specific application, BlueTEC technology typically employs Selective Catalytic Reduction (SCR) using diesel exhaust fluid (AdBlue) or NOx adsorber systems to manage nitrogen oxide emissions. These systems are integral to environmental compliance and require careful monitoring.
The OM642 engine is recognized for its high torque output, making the ML320 suitable for luxury commuting and light-to-medium duty towing. However, because it utilizes diesel technology, maintaining fuel quality and monitoring emissions components like the particulate filter is critical for long-term reliability. Owners should verify specific service history and any applicable retrofits for their specific VIN to ensure compliance with all manufacturer standards.
Common questions about this vehicle’s diesel oil and maintenance
What is the engine oil capacity for my 2008 ML320 Diesel?
The capacity is 9 quarts when including a filter change. If your model has an oil cooler that was drained, you may need additional oil.
Which AMSOIL oil is best for the OM642 engine?
AMSOIL recommends EOTQT-EA, which is designed for the unique demands of European diesel and gasoline vehicles.
What viscosity should I use in cold weather?
For temperatures below -25°C, 0W-30 or 0W-40 are recommended. For temperatures above -25°C, you can use 5W-30, 5W-40, or 5W-50.
How do I know which transmission fluid my Mercedes needs?
You must check your datacard. If it lacks code A89, the fluid is Red. If it has code A89 (Reduced-Friction), the fluid is Blue.
Does the ML320 have any active recalls?
NHTSA records show recalls regarding brake booster corrosion in certain models. You should contact a dealer with your VIN to confirm if your specific vehicle is affected.
Can I use any antifreeze in my diesel Mercedes?
It is best to use a compatible formulation like AMSOIL’s OAT or propylene glycol options. The AMSOIL lookup lists ANTPC1G-EA for this application.
Disclaimer: Not all information provided is a substitute for professional mechanical advice. Always verify all capacities, torque specifications, and fluid requirements against your official Mercedes-Benz owner’s manual or with a certified technician before performing maintenance.