For the 2014 Mercedes Benz GL350 with the 3.0L 6-cylinder Engine Code 642.826 N Diesel Turbo, the engine oil capacity is 8.5 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 2014 Mercedes Benz GL350 take?
The 2014 Mercedes Benz GL350 with the 642.826 N diesel engine requires specific viscosities to ensure proper lubrication across varying temperature ranges. The AMSOIL lookup lists several options depending on your climate.
AMSOIL product recommendations
Based on the AMSOIL lookup for your Mercedes Benz GL350, here are the recommended products for your maintenance needs.
| 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 |
| Transfer Case Fluid | AMSOIL Signature Series Fuel-Efficient 100% Synthetic ATF | ATLPK-EA |
Engine Oil Viscosity Options
| Temperature Range | Recommended Viscosities |
|---|---|
| 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 |
Engine Oil Details
| Feature | Specification/Data |
|---|---|
| AMSOIL Lookup Oil Grade | SEO59 |
| Oil Capacity | 8.5 quarts (with filter) |
| Drain Plug Torque | 24 MM Plug – 33 ft/lbs |
Note: After refilling, always check the oil level.
How much oil does it take with a filter change?
For a complete service including a new oil filter, your 2014 Mercedes Benz GL350 requires approximately 8.5 quarts of engine oil. It is critical to verify the level after the refill process.
Oil Filter Specifications
| Component | Part Number |
|---|---|
| MANN-FILTERS Oil Filter | HU821X-EA |
The MANN-FILTERS premium media is designed to offer improvements over OEM-branded filters, helping to reduce engine wear and offering OEM drain intervals.
Transmission and Transfer Case Fluid Requirements
Maintaining the 722.9 automatic transmission and the transfer case is vital for the longevity of your Mercedes BlueTEC SUV. The requirements vary based on specific vehicle data cards.
Automatic Transmission (722.9)
| Condition | Capacity / Notes |
|---|---|
| With A89 Code (Reduced-Friction) | 9.5 quarts total fill; Fluid is Blue in color |
| Without A89 Code | 9.5 quarts total fill; Fluid is Red in color |
Transfer Case Lubricant
| Configuration | Capacity |
|---|---|
| Double Speed (SL055) | 3.2 pints |
| Single Speed (SL055) | 1.1 pints |
Coolant Specifications
The cooling system requires a capacity of 12.2 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 |
Common diesel oil-related concerns and how AMSOIL products may help
Diesel engines like the OM642 present unique maintenance challenges, particularly regarding emissions and heavy-duty operation.
| Concern | Why it matters | AMSOIL Product | How it may help | Important Limitation |
|---|---|---|---|---|
| Emissions System Health | BlueTEC systems are complex and sensitive to oil additives. | EOTQT-EA | Designed for exceptional protection without harming emissions systems. | Does not replace mechanical repair of SCR/DPF. |
| Heavy Towing/Terrain | High heat and load increase transmission stress. | ATLPK-EA | Withstands rigors of heavy towing and elevated temperatures. | Requires correct fluid color/spec match. |
| Cold Weather Starts | Thick oil can cause wear during startup in low temps. | EOTQT-EA | Provides 0W viscosity for fluid flow in cold conditions. | Check local temperature requirements. |
Diesel maintenance notes for this vehicle
- Emissions Systems: As a BlueTEC model, the vehicle uses advanced technology to manage NOx emissions. Maintaining proper oil quality is essential to protect these subsystems.
- Fuel System Integrity: The OM642 engine utilizes high-pressure common rail direct injection (approximately 1,600 bar). Fuel system integrity is paramount for performance.
- Oil Level Monitoring: Always check the oil level after a refill to ensure accuracy within the 8.5-quart capacity.
Recall, TSB, and manufacturer communication notes
NHTSA research indicates several important communications for this vehicle model:
- Communication Software: A recall (Campaign 19V787000) was issued regarding a software fault in the emergency call system (eCall) that could cause inaccurate location data.
- Active Curve System (ACS): A recall (Campaign 18V272000) noted that if oil levels in the ACS reservoir are low, oil may foam and leak, potentially increasing fire risk.
- Child Seat Latch: A recall (Campaign 14V158000) was identified regarding child seat latch straps.
Note: Owners should verify open recalls by VIN through the Mercedes-Benz website or NHTSA.
About this vehicle
The 2014 Mercedes-Benz GL350 is part of the X166 generation of the GL-Class, a full-size luxury crossover SUV. 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 is a significant engine in the Mercedes-Benz lineup, utilizing common rail direct injection and a variable nozzle turbocharger to manage performance.
As a BlueTEC model, this vehicle incorporates advanced emissions control technologies designed to reduce nitrogen oxide (NOx) emissions. These systems often work in conjunction with a particulate filter to maintain environmental compliance. Because the OM642 engine operates at high pressures and utilizes complex urea injection or NOx storage systems, owners should focus on the health of these components during routine maintenance. The X166 chassis is designed for luxury and capability, making it a common choice for those requiring diesel efficiency in a large-format SUV.
Common questions about this vehicle’s diesel oil and maintenance
What is the engine oil capacity for my GL350?
The capacity is 8.5 quarts when replacing the filter. Always check the level after refilling.
Which AMSOIL oil is best for my Mercedes diesel?
AMSOIL recommends EOTQT-EA, which is designed for the unique demands of European diesel and hybrid vehicles.
How do I know if I need Blue fluid or Red fluid in my transmission?
This depends on your datacard. If you have the A89 code (Reduced-Friction), the fluid is Blue. Without that code, the fluid is Red.
Can I use a different viscosity for summer?
Yes, the lookup lists various options such as 15W-40 or 20W-50 depending on whether temperatures are above -15°C or -5°C respectively.
Does AMSOIL protect my BlueTEC emissions system?
The AMSOIL 0W-30 MS European Motor Oil is designed to provide exceptional engine protection without harming emissions systems.
How often should I service the transfer case?
Service intervals should follow the Mercedes-Benz workshop manual; however, ensure you use the correct capacity (3.2 pints for double speed or 1.1 pints for single speed).
Disclaimer: While this information is based on provided technical data, always verify all service specifications and recall status using your specific VIN through official Mercedes-Benz channels and the official workshop manual.