The Mercedes-Benz GLS 450 has been in production since 2016 with a turbocharged inline-6 engine configuration. Using the correct oil capacity, viscosity, and type is essential for maintaining performance and longevity. This guide lists all model years with full oil specifications and maintenance recommendations.
Mercedes-Benz specifies full synthetic oil for the GLS 450 to ensure optimal lubrication and engine protection under varying operating conditions. The vehicle requires 8.5 quarts of oil with filter replacement.
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2026 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Turbocharged Inline-6 (M256) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-40 or SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2761800009, Mann HU 7008 z, Mobil 1 M1-110A |
The 2026 Mercedes-Benz GLS 450 uses a 3.0L turbocharged inline-6 engine that requires 8.5 quarts of full synthetic oil. Using SAE 0W-40 or SAE 5W-40 oil provides the right balance of protection and efficiency under normal driving conditions.
2025 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Turbocharged Inline-6 (M256) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-40 or SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2761800009, Mann HU 7008 z, Mobil 1 M1-110A |
The 2025 Mercedes-Benz GLS 450 maintains the same 3.0L turbocharged inline-6 configuration requiring 8.5 quarts of full synthetic oil. Mercedes-Benz recommends SAE 0W-40 or SAE 5W-40 viscosity for optimal engine protection.
2024 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Turbocharged Inline-6 (M256) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-40 or SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2761800009, Mann HU 7008 z, Mobil 1 M1-110A |
The 2024 Mercedes-Benz GLS 450 equipped with the M256 turbocharged inline-6 engine requires 8.5 quarts of full synthetic oil with filter replacement. The manufacturer specifies SAE 0W-40 or SAE 5W-40 viscosity grade oil.
2023 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Turbocharged Inline-6 (M256) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-40 or SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2761800009, Mann HU 7008 z, Mobil 1 M1-110A |
The 2023 Mercedes-Benz GLS 450 uses 8.5 quarts of full synthetic oil in its 3.0L turbocharged inline-6 engine. SAE 0W-40 or SAE 5W-40 viscosity oil ensures proper engine lubrication.
2022 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Turbocharged Inline-6 (M256) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-40 or SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2761800009, Mann HU 7008 z, Mobil 1 M1-110A |
The 2022 Mercedes-Benz GLS 450 requires 8.5 quarts of full synthetic motor oil with the oil filter. Using SAE 0W-40 or SAE 5W-40 oil provides adequate protection for the turbocharged inline-6 engine.
2021 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Turbocharged Inline-6 (M256) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-40 or SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2761800009, Mann HU 7008 z, Mobil 1 M1-110A |
The 2021 Mercedes-Benz GLS 450 uses 8.5 quarts of full synthetic oil with its turbocharged inline-6 powerplant. The manufacturer recommends SAE 0W-40 or SAE 5W-40 viscosity for proper engine function.
2020 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Turbocharged Inline-6 (M256) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-40 or SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2761800009, Mann HU 7008 z, Mobil 1 M1-110A |
The 2020 Mercedes-Benz GLS 450 requires 8.5 quarts of full synthetic oil for the 3.0L turbocharged inline-6 engine. SAE 0W-40 or SAE 5W-40 oil viscosity meets manufacturer specifications.
2019 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Twin-Turbo V6 (M276) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 5W-30 or SAE 0W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2781800009, Mann HU 7025 z, K&N HP-8021 |
The 2019 Mercedes-Benz GLS 450 uses a 3.0L twin-turbo V6 engine requiring 8.5 quarts of full synthetic oil. SAE 5W-30 or SAE 0W-40 viscosity oil ensures proper lubrication for this engine configuration.
2018 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Twin-Turbo V6 (M276) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 5W-30 or SAE 0W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2781800009, Mann HU 7025 z, K&N HP-8021 |
The 2018 Mercedes-Benz GLS 450 requires 8.5 quarts of full synthetic oil with the oil filter. Using SAE 5W-30 or SAE 0W-40 oil provides adequate engine protection.
2017 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Twin-Turbo V6 (M276) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 5W-30 or SAE 0W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2781800009, Mann HU 7025 z, K&N HP-8021 |
The 2017 Mercedes-Benz GLS 450 uses 8.5 quarts of full synthetic oil in its 3.0L twin-turbo V6 engine. SAE 5W-30 or SAE 0W-40 viscosity meets manufacturer specifications.
2016 Mercedes-Benz GLS 450 Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 3.0L Twin-Turbo V6 (M276) |
| Oil Capacity (with Filter) | 8.5 qt (8.0 L) |
| Oil Capacity (without Filter) | 8.0 qt (7.5 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 5W-30 or SAE 0W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 23 lb-ft (30 N·m) |
| Recommended Filters | Mercedes-Benz OEM A2781800009, Mann HU 7025 z, K&N HP-8021 |
The 2016 Mercedes-Benz GLS 450 requires 8.5 quarts of full synthetic oil for its 3.0L twin-turbo V6 engine. SAE 5W-30 or SAE 0W-40 oil viscosity provides proper engine protection and efficiency.
Oil Maintenance and Service Tips
Checking Oil Level
Check engine oil level when the vehicle is parked on level ground with the engine at operating temperature. Allow five minutes after shutting off the engine for oil to drain into the pan before checking the dipstick. The oil level should remain between the minimum and maximum marks on the dipstick.
Oil Change Frequency
Mercedes-Benz recommends oil changes every 10,000 miles or 12 months under normal driving conditions. Severe driving conditions such as frequent short trips, extreme temperatures, or towing require more frequent oil change intervals at 5,000 to 7,500 miles. Using manufacturer-approved full synthetic oil helps extend service intervals while maintaining engine protection.
Oil Filter Replacement
Replace the oil filter with every oil change to ensure proper filtration. The GLS 450 uses a 74mm 14-flute oil filter housing that requires a specific oil filter wrench for removal. Lubricate the new oil filter gasket with fresh oil before installation to prevent leaking and ensure proper sealing.
Drain Plug Service
Tighten the oil drain plug to 23 lb-ft or 30 N·m using a torque wrench to prevent over-tightening or stripping threads. Inspect the drain plug washer and replace if damaged or compressed to prevent oil leaks.
Frequently Asked Questions
What kind of oil does a Mercedes-Benz GLS 450 use?
The Mercedes-Benz GLS 450 requires full synthetic motor oil meeting Mercedes-Benz specifications. Models from 2020 and newer use SAE 0W-40 or SAE 5W-40 viscosity, while 2016 to 2019 models use SAE 5W-30 or SAE 0W-40. Only use oils that meet Mercedes-Benz MB 229.51 or MB 229.52 specifications for proper engine protection.
How much oil does a Mercedes-Benz GLS 450 take?
The Mercedes-Benz GLS 450 takes 8.5 quarts or 8.0 liters of engine oil with the oil filter. Without the filter, the capacity is approximately 8.0 quarts or 7.5 liters. Always verify the oil level using the dipstick after filling to ensure proper capacity.
What is the recommended oil type for a Mercedes-Benz GLS 450?
Mercedes-Benz recommends full synthetic motor oil for the GLS 450 across all model years. Full synthetic oil provides superior protection at high temperatures, better cold-start performance, and extended oil change intervals compared to conventional or synthetic blend oils. Always use oil that meets Mercedes-Benz specifications for warranty coverage.
What is the oil change interval for a Mercedes-Benz GLS 450?
The standard oil change interval for the Mercedes-Benz GLS 450 is 10,000 miles or 12 months, whichever comes first. Drivers who frequently make short trips, operate in extreme temperatures, or tow heavy loads should consider reducing the interval to 5,000 to 7,500 miles. The onboard maintenance reminder system tracks driving conditions and alerts when service is due.
Can I use 5W-30 oil in my Mercedes-Benz GLS 450?
Models from 2016 to 2019 with the M276 twin-turbo V6 engine can use SAE 5W-30 or SAE 0W-40 viscosity oil. However, 2020 and newer models with the M256 inline-6 engine require SAE 0W-40 or SAE 5W-40 viscosity specifically. Always consult your owner’s manual to verify the correct viscosity for your specific model year and engine configuration.
What oil filter fits a Mercedes-Benz GLS 450?
The Mercedes-Benz GLS 450 uses different oil filters depending on the engine configuration. Models from 2020 and newer with the M256 inline-6 use Mercedes-Benz OEM part number A2761800009 or equivalent filters like Mann HU 7008 z and Mobil 1 M1-110A. Earlier models with the M276 V6 use part number A2781800009 or equivalents like Mann HU 7025 z and K&N HP-8021.
Conclusion
The Mercedes-Benz GLS 450 requires 8.5 quarts of full synthetic oil with viscosity ranging from SAE 0W-40 to SAE 5W-40 for newer models. Older model years from 2016 to 2019 may use SAE 5W-30 or SAE 0W-40 depending on the engine configuration. Using manufacturer-approved oil that meets Mercedes-Benz specifications ensures optimal engine performance, protection, and longevity. Following recommended maintenance intervals and using quality oil filters helps maintain reliability and preserve engine warranty coverage.
