The 2016 Mercedes-Benz C350E represents a sophisticated blend of performance and efficiency, powered by a unique 2.0-liter turbocharged four-cylinder engine (Engine Code 274.920 H Turbo). Maintaining this vehicle requires lubricants that can handle high thermal loads, extended service intervals, and the specific metallurgical requirements of European engineering. Using the correct fluids is not merely a maintenance task; it is essential for preserving the precision tolerances of the engine, the longevity of the transmission, and the overall driving dynamics of the C-Class sedan.
Recommended AMSOIL Products
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – This fluid is engineered for the unique demands of gasoline and turbocharged European vehicles, featuring a precise blend of synthetic base oils and premium additives designed to withstand the rigors of the 2.0L engine.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – An ideal choice for all temperature conditions, this oil provides superior cold-start protection and high-temperature stability, ensuring maximum flow to critical engine components in any climate.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid (OAT) formulation that protects all cooling system metals, gaskets, and hoses while offering extended service life of up to 150,000 miles or 5 years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated formula that requires mixing with distilled water, offering exceptional protection against corrosion and erosion for passenger cars and light trucks.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – This fluid withstands the rigors of heavy towing, elevated temperatures, and challenging terrain, remaining fluid even in sub-zero temperatures for the 7-speed transmission.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Specifically formulated to protect against wear and provide optimal fuel efficiency for the automatic transmission system.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Designed to provide excellent ABS and traction-control responsiveness with a stable viscosity over a wide temperature range, meeting Mercedes-Benz requirements.
Maintaining the lubrication integrity of the 2016 Mercedes-Benz C350E is critical because the vehicle’s engine is a high-precision, turbocharged unit that operates under significant stress. The 2.0L engine, identified by the code 274.920 H, is designed to deliver strong performance while maintaining fuel economy, a balance that relies heavily on the quality of the motor oil. Using standard mineral oils or synthetic blends that do not meet European specifications can lead to increased wear, sludge buildup, and reduced power output. The recommended AMSOIL 5W-40 FS 100% Synthetic European Motor Oil and AMSOIL 0W-40 FS 100% Synthetic European Motor Oil feature a precise blend of synthetic base oils and premium additives specifically tailored for the high-heat and high-stress environment of turbocharged engines. These oils ensure that critical components remain lubricated during extreme temperature fluctuations, protecting the engine from the added stress of turbocharging and the demands of frequent stop-and-go driving.
Engine Oil and Filtration Details
For the engine, the recommended capacity is 7.4 quarts when including a filter replacement. It is important to note that after refilling, owners should check the oil level to ensure proper saturation. The oil drain plug should be torqued to 30 ft/lbs to ensure a secure seal without risking damage to the threads. The vehicle is designed to accept a viscosity of 0W-30 or 0W-40 for all temperature conditions. For temperatures above -25°C, 5W-30 or 5W-40 are also suitable options. The AMSOIL 5W-40 FS and 0W-40 FS products are specifically formulated to meet these needs, offering a European formula that supports the extended service intervals often associated with modern Mercedes-Benz vehicles.
Transmission and Cooling Systems
The transmission system, specifically the 724.295….SL058 automatic transmission, requires specialized attention to ensure smooth shifting and longevity. The total fill capacity for this 7-speed transmission is 9.5 quarts. Using a fluid like the AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid or AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is crucial, as these products remain fluid in sub-zero temperatures while providing reserve protection during heavy use. This ensures that the transmission can handle the rigors of heavy towing, elevated temperatures, and challenging terrain without compromising performance. Neglecting transmission fluid quality can lead to costly problems down the road, including wear, sludge, and temperature-related failures.
Cooling system maintenance is equally vital for the C350E. The AMSOIL Passenger Car & Light Truck Antifreeze & Coolant capacity varies slightly depending on the specific component, with the High-Temperature Coolant System (HTCC) requiring 9.5 quarts, the Battery coolant requiring 6.2 quarts, and the Low-Temperature Coolant System (LTCC) needing 3.2 quarts. The AMSOIL Propylene Glycol Antifreeze and Engine Coolant are excellent choices here. These formulations are phosphate-, nitrate-, nitrite-, silicate-, borate-, and amine-free, ensuring compatibility with all other antifreeze colors and protection for all cooling system metals, gaskets, and hoses. They offer protection up to 150,000 miles or 5 years, which helps prevent corrosion and extends the life of the cooling components.
AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid and Other Fluids
Brake fluid maintenance is often overlooked but is critical for safety. The C350E requires a DOT 4 plus fluid or products approved on the MB Sheet 331.0. The AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid meets these stringent requirements, providing excellent responsiveness for ABS and traction-control systems. It maintains a stable viscosity over a wide temperature range, ensuring reliable braking performance in both hot and cold conditions.
About the Vehicle
The 2016 Mercedes-Benz C350E belongs to the W205 generation of the C-Class, a model renowned for its sporty yet sophisticated character. This particular year and model year introduced a significant shift toward hybrid technology, combining a 2.0-liter turbocharged gasoline engine with an electric motor to create a plug-in hybrid powertrain. This setup delivered a combined output that offered a compelling balance of everyday usability and high-performance capability, marking a pivotal moment for the C-Class in the luxury sedan segment.
Driven by the 274.920 H turbocharged engine, the vehicle is celebrated for its responsive acceleration and refined driving dynamics. The inclusion of the electric motor provides instant torque fill, smoothing out power delivery and enhancing efficiency without sacrificing the spirited driving experience that Mercedes-Benz enthusiasts expect. As a sedan, the C350E offers a comfortable yet athletic ride, making it a versatile choice for daily commuting, long-distance travel, and spirited weekend drives. The platform was designed with a focus on lightweight construction and aerodynamic efficiency, contributing to its reputation for strong fuel economy relative to its performance class. Owners of the C350E often appreciate its blend of luxury, technology, and driving engagement, solidifying its position as a leading competitor in the luxury sports sedan market. Proper maintenance of its complex powertrain ensures that this sophisticated machine continues to deliver the premium performance it was engineered to provide.