For the 2009 Mercedes Benz GL320 with the 3.0L 6-cylinder (Engine Code 642.820 F) Diesel Turbo, the engine oil capacity is 9 quarts (including filter replacement). Recommended viscosities include 0W-30 or 0W-40 for all temperatures, with other options like 5W-30 or 15W-40 available depending on ambient temperature. 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 2009 Mercedes Benz GL320 take?
The 2009 Mercedes Benz GL320 with the 642.820 F engine requires specific oil viscosities to ensure proper lubrication across various temperature ranges. The AMSOIL lookup provides several options depending on your local climate and operating conditions.
AMSOIL product recommendations
Based on the AMSOIL lookup for your Mercedes Benz GL320, here are the recommended products for your maintenance needs.
| 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 |
| Transfer Case Fluid | AMSOIL Signature Series Fuel-Efficient 100% Synthetic ATF | ATLPK-EA |
Engine Oil Viscosity Options
| Temperature Range | Recommended Viscosity |
|---|---|
| All Temperatures | 0W-30, 0W-40 |
| Above -25°C | 5W-30, 5W-40, 5W-50 |
| Above -20°C | 10W-30, 10W-40, 10W-50, 10W-60 |
| Above -15°C | 15W-30, 15W-40, 15W-50 |
| Above -5°C | 20W-40, 20W-50 |
AMSOIL lookup oil grade: SEO59
How much oil does it take with a filter change?
The engine requires 9 quarts of oil when performing a service that includes the oil filter. Note that for models equipped with an oil cooler, additional oil may be required if the cooler is drained during service. Always allow 5 minutes after refilling or turning the engine off before checking the oil level.
Engine Oil Specifications and Torque
| Specification | Value |
|---|---|
| Oil Drain Plug Torque | 22 ft/lbs |
| OEM Specification | Not confirmed from source data |
Automatic Transmission and Transfer Case Fluids
The 722.9 automatic transmission in this vehicle has specific requirements based on the datacard code (A89). Proper fluid selection is critical for smooth shifting and longevity.
Transmission Fluid Details
- Without A89 Code: The fluid is Red in color.
- With A89 Code (Reduced-Friction): The fluid is Blue in color.
- Capacity: 7-speed 722.9 Total Fill is 9.5 quarts.
Transfer Case Lubricant
| Configuration | Capacity |
|---|---|
| Double Speed | 3.2 pints |
| Single Speed | 1.1 pints |
Coolant Specifications
The cooling system requires a capacity of 10 quarts. AMSOIL offers both pre-mix and concentrated options for this application.
| Product | Type/Notes |
|---|---|
| ANTPC1G-EA | Ethylene glycol 50/50 pre-mix formulation |
| ANT1G-EA | Concentrated – requires mixing with distilled or high-quality water |
Diesel maintenance notes for this vehicle
When maintaining the OM642 diesel engine, owners should focus on several key areas:
- Oil Level Verification: Always allow 5 minutes after refilling or turning off the engine before checking the oil level to ensure an accurate reading.
- Drain Plug Torque: Ensure the oil drain plug is tightened to 22 ft/lbs to prevent leaks or damage.
- Oil Cooler Service: If your model has an oil cooler and it is drained, be prepared for a higher oil requirement than the standard 9 quarts.
- Aftertreatment Monitoring: Given the diesel architecture, monitoring exhaust aftertreatment components is critical for long-term ownership.
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 degrade oil. | EOTQT-EA | Designed for the unique demands of diesel European vehicles. | Requires regular interval adherence. |
| Engine Wear | Diesel engines face high pressure and soot. | HU821X-EA | Premium media helps reduce engine wear. | Filter must be replaced at correct intervals. |
| Transmission Shudder | Incorrect fluid can cause poor shifting. | OTLQT-EA | Promotes smooth, shudder-free shifts. | Must match A89 or non-A89 requirements. |
Common maintenance concerns for this vehicle
Based on technical research of the OM642 engine and Mercedes diesel platforms:
- Injection System Health: The common rail direct injection system operates at high pressures (approx. 1,600 bar) and requires clean fuel and lubrication.
- Turbocharger Components: Monitoring the variable nozzle turbocharger is a key aspect of diesel maintenance.
- Exhaust Aftertreatment: Owners should monitor particulate filters and potentially BlueTEC systems (which may use AdBlue urea injection).
Recall, TSB, and manufacturer communication notes
NHTSA research indicates the following recall information for the 2009 Mercedes Benz GL320:
- Air Bag Inflator Module: A recall (Campaign 16V081000) was issued because excessive internal pressure in the driver’s frontal air bag inflator could cause it to rupture during deployment, potentially causing injury.
- Brake Booster Housing: A recall (Campaign 22V315000) noted that moisture accumulation in the brake booster housing unit could cause corrosion, leading to reduced brake performance or failure.
Note: Always verify open recalls by VIN through an authorized Mercedes-Benz dealer or the NHTSA website.
About this vehicle
The 2009 Mercedes-Benz GL320 is equipped with the OM642 engine, a significant component in Mercedes-Benz’s diesel lineup. This engine belongs to a family of 3.0-liter, 24-valve V6 diesel engines characterized by an aluminum block and heads. Designed as a replacement for older straight-5 and straight-6 configurations, the OM642 utilizes a 72-degree V6 architecture.
To mitigate the inherent vibrations of this design, the engine incorporates a counter-rotating balance shaft mounted between the cylinder banks. From a technical standpoint, the OM642 features common rail direct injection operating at high pressures (approximately 1,600 bar) and utilizes a variable nozzle turbocharger. The compression ratio is rated at 18.0:1.
Depending on the specific application and emissions technology used, these engines may utilize BlueTEC systems. In some configurations, this involves AdBlue urea injection for NOx reduction, while others may rely on a NOx storage catalyst or a particulate filter to meet ULEV certification standards. Owners should verify their specific engine’s output via the vehicle’s VIN or owner’s manual, as power outputs can vary by application.
Common questions about this vehicle’s diesel oil and maintenance
What is the oil capacity for my 2009 GL320 diesel?
The capacity is 9 quarts with a filter change. If you are draining an oil cooler, you may need more.
Which AMSOIL oil is best for the OM642 engine?
AMSOIL recommends AMSOIL 0W-30 MS 100% Synthetic European Motor Oil (EOTQT-EA) for its precise blend of synthetic base oils and additives designed for European diesel engines.
How do I know if my transmission fluid should be red or blue?
This depends on your datacard. If you do not have the A89 (Reduced-Friction) code, the fluid is Red. If you have the A89 code, the fluid is Blue.
What torque spec should I use for the oil drain plug?
The oil drain plug should be torqued to 22 ft/lbs.
Does my vehicle require special coolant?
The AMSOIL lookup lists ANTPC1G-EA (pre-mix) or ANT1G-EA (concentrate) for this application.
How often should I change my diesel oil?
While specific intervals depend on driving conditions, maintaining the health of the common rail and turbocharger through regular changes is critical for these diesel engines.
Disclaimer: This information is derived from provided source data. Always consult your vehicle’s owner manual or a certified professional before performing maintenance.