For the 2009 Mercedes Benz E320 with the 3.0L 6-cylinder Engine Code 642.920 D Diesel Turbo, the engine oil capacity is 9 quarts (including filter replacement). 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) paired with a MANN-FILTERS Oil Filter (HU821X-EA).
What oil does a 2009 Mercedes Benz E320 take?
The 2009 Mercedes Benz E320 with the 642.920 D engine requires specific oil viscosities to ensure proper lubrication across varying temperature ranges. The AMSOIL lookup identifies several suitable options depending on your local climate and operating conditions.
AMSOIL product recommendations
Based on the AMSOIL lookup for the 2009 Mercedes Benz E320 (642.920 D), the following products are recommended to maintain engine and system health.
| Component | AMSOIL Product Name | Product Code |
|---|---|---|
| Engine Oil | AMSOIL 0W-30 MS 100% Synthetic European Motor Oil | EOTQT-EA |
| Oil Filter | MANN-FILTERS Oil Filter | HU821X-EA |
| Antifreeze | AMSOIL Passenger Car & Light Truck Antifreeze & Coolant | ANTPC1G-EA |
| Antifreeze (Conc.) | AMSOIL Propylene Glycol Antifreeze and Engine Coolant | ANT1G-EA |
| Transmission Fluid | AMSOIL Signature Series Fuel-Efficient ATF | ATLPK-EA |
| Transmission Fluid | AMSOIL OE Fuel-Efficient ATF | OTLQT-EA |
| Brake Fluid | AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid | BFLVCN-EA |
| Power Steering | AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid | PSFCN-EA |
Engine Oil Specifications
| Detail | Value |
|---|---|
| AMSOIL Lookup Oil Grade | SEO59 |
| Confirmed OEM Specification | Not confirmed from source data |
Engine Oil Viscosity Options
| Condition | Recommended 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?
When performing an oil service on the 3.0L 6-cylinder diesel engine, you must account for the capacity of the oil filter and potential additional requirements from the oil cooler.
| Component | Capacity |
|---|---|
| Engine Oil (with filter) | 9 quarts |
Note: On models equipped with an oil cooler, additional oil may be needed when the cooler is drained. Always allow 5 minutes after refilling or turning the engine off before checking the oil level.
Oil Drain Plug Torque Specification
| Fastener | Torque Value |
|---|---|
| Oil Drain Plug | 22 ft/lbs |
Automatic Transmission Fluid Specifications
The 722.9 automatic transmission in this vehicle has specific requirements based on the datacard code present in your vehicle.
Transmission Type: 722.9 (With A89 Code)
If your datacard includes the A89 code (Reduced-Friction), the fluid is blue in color. The total fill capacity for the 7-speed 722.9 is 9.7 quarts.
Transmission Type: 722.9 (Without A89 Code)
If your datacard does not include the A89 code, the fluid is red in color. The total fill capacity for the 7-speed 722.9 is 9.7 quarts.
Diesel maintenance notes for this vehicle
- Emissions Systems: As a BlueTEC vehicle, this engine utilizes advanced emissions technology (such as particulate filters or AdBlue/urea injection). Maintenance of these systems is critical for long-term reliability.
- Oil Level Verification: After an oil change, wait at least 5 minutes after refilling before checking the level to ensure accuracy.
- Coolant Compatibility: When servicing the cooling system, use a compatible coolant. AMSOIL offers both a 50/50 pre-mix and a concentrated version that requires mixing with distilled or high-quality water.
Common diesel oil-related concerns and how AMSOIL products may help
| Concern | Why it matters | AMSOIL product from this lookup | How it may help | Important limitation |
|---|---|---|---|---|
| Turbocharger Protection | High heat and speed in the turbo can cause oil breakdown. | EOTQT-EA | Designed for unique demands of European diesel vehicles. | Diagnosis/repair may be required if failure occurs. |
| Soot & Sludge | Diesel engines produce soot that can contaminate oil. | OTLQT-EA (ATF) | Resists harmful sludge in the transmission. | Not applicable to engine oil soot. |
| Cold Starts | Thick oil can hinder starting in low temperatures. | EOTQT-EA | Provides 0W viscosity for better flow. | Check local temperature requirements. |
Common maintenance concerns for this vehicle
Owners of the OM642 engine should monitor several key areas:
- Emissions System Health: Monitor DPF and AdBlue/DEF systems, as these are integral to BlueTEC operation.
- Fuel System Maintenance: Diesel fuel system health is vital for maintaining high injection pressures (approx. 1,600 bar).
- Turbocharger Performance: Ensure the variable nozzle turbocharger is operating efficiently without leaks.
Recall, TSB, and manufacturer communication notes
NHTSA research indicates several recalls related to the 2009 Mercedes Benz E320 (specifically regarding sunroof assemblies):
- Sunroof Assembly (Campaign 19V918000): The bonding between the glass panel and sliding roof frame may deteriorate, potentially causing the glass to detach.
- Sunroof Assembly (Campaign 22V954000): An expansion of previous recalls regarding improperly secured glass sunroof panels that may detach.
- Sunroof Assembly (Campaign 24V874000): A further expansion of the sunroof panel security recall.
Note: These recalls involve the risk of a detached panel becoming a road hazard. Owners should contact MBUSA customer service at 1-800-367-6372 and verify open recalls using their specific VIN.
About this vehicle
The 2009 Mercedes-Benz E320 is a prominent member of the E-Class lineup, an executive series that has been a mainstay for Mercedes-Benz since 1953. This particular model is powered by the OM642 engine, a 3.0L V6 diesel characterized by its aluminum construction and 72-degree V configuration.
The OM642 was engineered to replace older straight-five and straight-six diesel engines, utilizing common rail direct injection and a variable nozzle turbocharger to balance performance with efficiency. As part of the BlueTEC category, this vehicle employs advanced emissions technology, which may include AdBlue urea injection for NOx reduction or a NOx storage catalyst, alongside a particulate filter to manage soot output.
Mechanically, the OM642 is a sophisticated unit that incorporates a counter-rotating balance shaft to mitigate the vibrations common in V6 designs. It operates with high injection pressures of approximately 1,600 bar and maintains a compression ratio of 18.0:1. Because this engine belongs to a broader family (including the OM648 and OM651), owners should always verify specific component compatibility, as BlueTEC implementations can vary between model years and vehicle classes.
Maintenance for this vehicle often focuses on emissions system health (DPF/AdBlue), turbocharger performance, and diesel fuel system integrity. Owners are encouraged to confirm exact lubricant requirements for their specific variant before servicing.
Common questions about this vehicle’s diesel oil and maintenance
What is the oil capacity for my 2009 E320 diesel?
The engine requires 9 quarts of oil when performing a service that includes a filter change.
Which AMSOIL oil is best for my Mercedes BlueTEC?
AMSOIL recommends EOTQT-EA, which is designed for the unique demands of European diesel and hybrid vehicles.
What should I do if my transmission fluid is red or blue?
The color depends on your datacard. If you have code A89 (Reduced-Friction), the fluid is blue. Without code A89, the fluid is red.
Does this vehicle require special brake fluid?
The AMSOIL lookup note references using DOT 4 plus or products approved on MB Sheet 331.0 for this application.
Can I use a different viscosity in winter?
Yes, while 0W-30/0W-40 is good for all temperatures, 5W-30, 5W-40, or 5W-50 can be used for temperatures above -25°C.
How do I check my Mercedes recalls?
You should contact MBUSA customer service at 1-800-367-6372 or visit the NHTSA website to verify open recalls using your specific VIN.
Disclaimer: Information provided is based on available source data. Always verify specific torque, capacity, and compatibility against your vehicle’s exact VIN and owner’s manual before performing maintenance.