For the 2009 Mercedes Benz R320 with the 3.0L 6-cylinder Engine Code 642.870 H Diesel Turbo, the engine oil capacity is 9 quarts (with filter). The recommended viscosities are 0W-30 or 5W-30. AMSOIL recommends AMSOIL 0W-30 MS 100% Synthetic European Motor Oil (EOTQT-EA) paired with a MANN-FILTERS Oil Filter (HU821X-EA) for optimal protection.
What oil does a 2009 Mercedes Benz R320 take?
The 2009 Mercedes Benz R320 with the 3.0L 6-cylinder diesel engine requires specific oil viscosities to ensure proper lubrication of the OM642 turbo diesel powerplant. The AMSOIL lookup lists both 0W-30 and 5W-30 viscosities for this application across all temperatures.
AMSOIL product recommendations
Based on the AMSOIL lookup data, the following products are recommended for your Mercedes Benz R320 diesel maintenance:
| 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 |
| Coolant | AMSOIL Passenger Car & Light Truck Antifreeze & Coolant | ANTPC1G-EA |
| Coolant (Alt) | AMSOIL Propylene Glycol Antifreeze and Engine Coolant | ANT1G-EA |
| Automatic Transmission | AMSOIL Signature Series Fuel-Efficient 100% Synthetic ATF | ATLPK-EA |
| Automatic Transmission | 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
| Attribute | Details |
|---|---|
| AMSOIL Lookup Oil Grade | SEO55 |
| Viscosity Options | 0W-30, 5W-30 (All TEMPS) |
| Oil Specification | Not confirmed from source data |
Engine Oil Capacity and Torque
| Detail | Specification |
|---|---|
| Capacity (with filter) | 9 quarts |
| Oil Drain Plug Torque | 22 ft/lbs |
Note: After refilling, always check the oil level.
How much transmission fluid does it take?
The 7-speed 722.9 automatic transmission in this vehicle has a total fill capacity of 9.5 quarts. The specific fluid required depends on whether your vehicle contains the A89 (Reduced-Friction) code on the datacard.
Transmission Fluid Requirements
| Condition | Fluid Color | Capacity |
|---|---|---|
| Without A89 Code | Red | 9.5 quarts |
| With A89 Code | Blue | 9.5 quarts |
Transfer Case Lubricant
For the transfer case (U/K TRC….SL057), the capacity is 1.1 pints. The drain plug torque specification is 18 ft/lbs.
Diesel maintenance notes for this vehicle
- Emissions Systems: This vehicle utilizes Mercedes BlueTEC technology, which often involves Selective Catalytic Reduction (SCR) or particulate filters. Maintaining fluid integrity is critical for these systems.
- Oil Filter: The MANN-FILTERS HU821X-EA is designed to offer OEM drain intervals and help reduce engine wear.
- Coolant: The cooling system capacity is 10 quarts. AMSOIL offers both a 50/50 pre-mix (ANTPC1G-EA) and a concentrated version (ANT1G-EA).
Common diesel oil-related concerns and how AMSOIL products may help
| Concern | Why it matters | AMSOIL Product | How it may help | Limitation |
|---|---|---|---|---|
| Turbocharger Protection | High heat and speed in the turbo can cause oil breakdown. | EOTQT-EA | Provides exceptional engine protection. | Does not repair existing damage. |
| Emissions System Health | Diesel soot and additives can affect BlueTEC components. | EOTQT-EA | Designed to protect without harming emissions systems. | Requires proper maintenance intervals. |
| Transmission Heat | Heavy towing or terrain increases ATF temperature. | ATLPK-EA | Withstands rigors of heavy towing and elevated temperatures. | Diagnosis required for mechanical failure. |
Common maintenance concerns for this vehicle
Owners of the R-Class diesel should regularly monitor the following:
- BlueTEC System: Monitor urea/AdBlue levels and sensor accuracy to ensure proper exhaust after-treatment.
- High-Pressure Fuel System: The common rail system operates at high pressures; maintaining fuel integrity is vital for long-term reliability.
- Brake Performance: Ensure the brake booster and hydraulic systems are inspected regularly for moisture or corrosion.
Recall, TSB, and manufacturer communication notes
NHTSA research indicates the following recalls for the 2009 Mercedes Benz R320:
- Air Bag Inflator: A recall (Campaign 16V081000) was issued regarding driver-side frontal air bag inflators that may rupture upon deployment, potentially causing injury.
- Brake Booster: A recall (Campaign 22V315000) involves moisture accumulation in the brake booster housing, which could lead to reduced performance or failure.
Disclaimer: Always verify open recalls by using your specific VIN through official Mercedes-Benz or NHTSA channels.
About this vehicle
The 2009 Mercedes-Benz R320 is a luxury MPV (Multi-Purpose Vehicle) that belongs to the R-Class family, designed as a mid-size luxury vehicle bridging the gap between traditional passenger cars and larger SUVs. It shares architectural similarities with the M-Class and GL-Class platforms.
At its core is the OM642 engine, a 3.0L V6 diesel powerplant featuring aluminum construction (block and heads) in a 72-degree V6 configuration. This sophisticated engine utilizes common rail direct injection at high pressures and a variable nozzle turbocharger. To mitigate inherent V6 vibrations, the engine includes a counter-rotating balance shaft located between the cylinder banks.
As part of the Mercedes BlueTEC technology suite, this vehicle incorporates advanced emissions control systems. Depending on regional requirements, this typically involves Selective Catalytic Reduction (SCR) with AdBlue urea injection or NOx storage catalysts to manage nitrogen oxide emissions. Maintenance professionals often emphasize the importance of maintaining fluid integrity and sensor accuracy due to the complexities of these high-pressure fuel and exhaust after-treatment systems.
Common questions about this vehicle’s diesel oil and maintenance
What is the engine oil capacity for my R320?
The capacity is 9 quarts when performing an oil change with a new filter. Always check the level after refilling.
Which viscosity should I use for the OM642 engine?
The AMSOIL lookup lists 0W-30 and 5W-30 as suitable viscosities for all temperatures.
Does my transmission fluid color matter?
Yes. If your vehicle does not have the A89 (Reduced-Friction) code, the fluid is Red. If it has the A89 code, the fluid is Blue.
How often should I change the coolant?
AMSOIL offers protection for up to 150,000 miles or 5 years for their Passenger Car & Light Truck Antifreeze, but you should consult your owner’s manual for specific intervals.
Can I use any brake fluid?
The AMSOIL lookup notes that you should use DOT 4 plus or products approved on MB Sheet 331.0.
What is the torque spec for the oil drain plug?
The confirmed torque specification for the oil drain plug is 22 ft/lbs.
Verification Disclaimer: All technical specifications, capacities, and torque values are derived from provided AMSOIL and NHTSA data. Always verify with your vehicle’s owner manual or a certified technician before performing maintenance.