The 2022 Mercedes-Benz E450 is a sophisticated luxury sedan powered by a 3.0-liter inline-six turbocharged engine (Engine Code 256.930). This powerplant is engineered for high performance, delivering smooth power and impressive fuel efficiency, but it places significant demands on its lubrication system. The combination of high heat from the turbocharger, precise tolerances, and modern emissions requirements makes the choice of motor oil critical for maintaining engine longevity and performance. Using a lubricant designed specifically for European standards ensures that the engine receives the protection it needs against wear, sludge, and thermal breakdown.
Recommended AMSOIL Products
- AMSOIL 5W-30 LS 100% Synthetic European Motor Oil – A premium synthetic blend designed specifically for the high-performance demands of gasoline, diesel, and hybrid European vehicles, featuring a precise formulation for optimal protection.
- AMSOIL 5W-40 MS 100% Synthetic European Motor Oil – An excellent alternative viscosity option that offers the same superior European formulation for vehicles operating in varying temperature conditions above -25°C.
- AMSOIL 0W-20 LS 100% Synthetic European Motor Oil – A thinner viscosity grade recommended for specific operating conditions, providing rapid flow and protection at startup for the E450’s turbo engine.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Designed to withstand heavy towing, elevated temperatures, and challenging terrain while maintaining fluidity in sub-zero conditions for optimal transmission performance.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – A high-quality synthetic fluid that protects against wear and meets OE specifications for efficient operation.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid (OAT) formulation that protects cooling system metals, gaskets, and hoses, offering protection up to 150,000 miles or 5 years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated formula that greatly surpasses standards for metallic corrosion and erosion, requiring mixing with distilled water for maximum cooling efficiency.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Provides excellent ABS and traction-control responsiveness with a stable viscosity over a wide temperature range, ideal for the E450’s high-performance braking system.
When maintaining the 2022 Mercedes-Benz E450, understanding the specific fluid requirements is just as important as selecting the right brand. The vehicle’s engine oil capacity is 9 quarts when including a filter change. It is crucial to check the oil filter capacity after refilling to ensure the correct amount is in the system, as overfilling or underfilling can impact the turbocharger’s performance and engine health. The recommended viscosities range from 0W-20 for extreme cold or specific efficiency requirements to 5W-30 and 5W-40 for general operation, with 0W-20, 0W-30, and 0W-40 being suitable for all temperatures, while 5W-30 and 5W-40 are recommended for temperatures above -25°C.
Beyond the engine, the cooling system plays a vital role in the E450’s longevity. The system requires a specific volume of coolant, with different capacities for high-temperature and low-temperature components. The high-temperature propylene glycol antifreeze capacity is listed at 14.8 quarts, while the low-temperature capacity is 4.2 quarts. AMSOIL’s antifreeze products are engineered to exceed original equipment manufacturer (OEM) requirements, ensuring that the vehicle’s aluminum components and hoses are protected against corrosion and scaling. Using a high-quality coolant can prevent expensive repairs related to overheating or cooling system failure, which are critical concerns for high-performance luxury vehicles.
The automatic transmission in the E450 also benefits from AMSOIL’s specialized fluids. Whether you choose the Signature Series or the OE Fuel-Efficient variety, these products are designed to reduce friction and improve fuel economy while providing robust protection against wear. The fluid remains fluid in sub-zero temperatures, ensuring smooth shifting even in harsh winter conditions. Similarly, the brake fluid must meet strict DOT standards to ensure safe stopping power. AMSOIL’s DOT 3 and DOT 4 synthetic brake fluid offers a higher boiling point than conventional fluids, reducing the risk of brake fade during spirited driving or when the vehicle is used for towing.
Critical Fluid Systems for the E450
Proper maintenance of the 2022 Mercedes-Benz E450 extends beyond just the engine oil. The differential and transfer case, where applicable, require specific lubricants to handle the torque and stress of the all-wheel-drive system. For the transfer case, the capacity is approximately 1.5 pints, and specific torque specifications must be followed for the drain and fill plugs to prevent leaks or damage. Ensuring the transfer case is lubricated with the correct fluid helps maintain smooth power delivery to all four wheels.
For owners who wish to extend the life of their fuel system and engine, AMSOIL offers additional protection products. The AMSOIL P.i. Performance Improver gasoline additive is a powerful tool for restoring horsepower and fuel injectors, particularly in vehicles with direct injection systems like the E450’s turbocharged engine. Over time, carbon buildup can degrade performance, but this additive helps restore flow rates to 100% after a single tank of treated fuel. This not only improves engine responsiveness but also helps in maintaining optimal fuel economy.
Seasonal storage and long-term maintenance are also considerations for E450 owners. If the vehicle will be stored for an extended period, AMSOIL Gasoline Stabilizer can keep the fuel fresh for up to 12 months, protecting against varnish and gum buildup. For engine protection during storage, AMSOIL Engine Fogging Oil is highly effective in preventing rust and corrosion on internal components. These additives and treatments ensure that when the vehicle is driven again, it starts up smoothly and is ready for the road.
About the Vehicle
The 2022 Mercedes-Benz E450 represents a significant leap forward in the luxury sedan segment, blending sporty performance with uncompromising comfort and technology. Part of the long-standing E-Class lineage, which has been a benchmark in the automotive world for decades, the E450 distinguishes itself with a sophisticated powertrain that defines modern Mercedes-Benz engineering. At the heart of this sedan is the 3.0-liter inline-six engine, specifically the M256 4-matic Turbo unit, which has become a hallmark of the brand’s shift toward efficient yet powerful propulsion.
This 3.0-liter powerplant is equipped with an integrated starter-generator (ISG) and an electric supercharger, technologies that eliminate turbo lag and provide immediate throttle response. The integration of these systems allows the E450 to deliver a seamless driving experience where the torque curve is flat and accessible across the entire RPM range. Owners of the E450 often praise the vehicle’s ability to merge the dynamics of a sports car with the plush, refined ride quality expected of a luxury limousine. The 4MATIC all-wheel-drive system further enhances this by providing superior traction in adverse weather conditions, making it a versatile choice for drivers in diverse climates.
The E-Class platform on which the E450 is built is renowned for its safety innovations and advanced driver-assistance systems. The 2022 model year continues this tradition with features like active brake assist, blind spot monitoring, and lane-keeping assist, all integrated into the vehicle’s electronic architecture. The interior design typically features high-quality materials, ergonomic seating, and the latest MBUX infotainment system, creating a sanctuary for the driver and passengers. This combination of luxury and capability has kept the E-Class at the top of preference lists for executives, families, and enthusiasts alike.
Despite its reputation for reliability, the E450, like many modern high-performance vehicles, can benefit from premium lubricants to mitigate specific issues that may arise with the engine code 256.930. One common area of concern for this engine family is the buildup of carbon deposits on the intake valves, a result of the direct injection system. While the electric supercharger helps mitigate lag, it also operates at high temperatures, which can accelerate deposit formation. Using a fuel additive like AMSOIL P.i. can help keep these injectors clean and maintain the engine’s optimal power output.
Another area where premium fluids can make a difference is in the longevity of the engine’s timing chain and tensioner systems. High temperatures and the constant stress of turbocharging can put wear on these components over time. AMSOIL’s European-specific motor oils are formulated to reduce friction and shear stress, potentially extending the service life of these critical engine parts. Furthermore, the high-pressure fuel pumps in this engine family are susceptible to wear if the fuel is not clean or the oil does not provide adequate lubrication. Ensuring the use of high-quality oil and fuel additives can help protect these pumps from premature failure.
Finally, the transmission system in the E450 is a complex piece of machinery that benefits from fluid stability. In stop-and-go traffic or during aggressive driving, the transmission can heat up significantly. Standard fluids may break down or lose their friction modifiers over time, leading to harsh shifts or reduced efficiency. Using a high-performance synthetic transmission fluid helps maintain consistent friction characteristics and cooling properties, ensuring smooth gear changes and protecting the transmission from the thermal stress of the turbocharged engine. By addressing these specific needs with the right products, owners can ensure their E450 remains a reliable and enjoyable driving companion for years to come.
The 2022 Mercedes-Benz E450 is a vehicle built for those who demand the best in luxury, performance, and engineering. By adhering to the recommended fluid specifications and utilizing high-quality synthetic lubricants like those from AMSOIL, you are investing in the continued health and performance of your vehicle. Whether you are navigating city streets or cruising on the highway, proper lubrication ensures that every component from the engine to the brakes operates at peak efficiency.
Remember to always check the dipstick after an oil change to confirm the correct level, and follow the recommended intervals for fluid changes. While synthetic oils allow for extended drain intervals, regular inspections are key to identifying any potential issues early. With the right care, your E450 will continue to deliver the smooth, powerful drive that has made the E-Class a legend in the automotive world.