Maintaining the peak performance of your 2018 Mercedes-Benz AMG GT C requires a lubrication strategy that matches the rigorous demands of its twin-turbocharged 4.0-liter V8 engine. This high-performance machine is engineered for speed and precision, generating significant heat and torque that place exceptional stress on all mechanical components. Using the correct synthetic fluids ensures that critical parts receive adequate protection against wear, corrosion, and thermal breakdown. AMSOIL synthetic lubricants are specifically designed to exceed original equipment manufacturer standards, offering superior stability in extreme temperatures and extended service intervals. This comprehensive guide outlines the essential fluids and capacities needed to keep your AMG GT C operating at its absolute best.
Recommended AMSOIL Products
- AMSOIL 5W-40 FS 100% Synthetic European Motor Oil – A precisely engineered formula designed for the unique demands of European gasoline, diesel, and hybrid vehicles, providing exceptional protection under high-temperature turbocharged conditions.
- AMSOIL 0W-40 FS 100% Synthetic European Motor Oil – Offers optimal cold-start protection while maintaining stability at extreme operating temperatures, ideal for the high-stress environment of the AMG GT C engine.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique phosphate-free, silicate-free OAT formulation that provides corrosion protection for the cooling system, capable of lasting up to 150,000 miles or five years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated formula requiring mixing with distilled water, offering extended protection up to 1,000,000 miles in heavy-duty applications or five years in passenger cars.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Designed to provide excellent ABS and traction-control responsiveness with stable viscosity over a wide temperature range, meeting MB Sheet 331.0 requirements.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Reduces friction and helps keep seals soft to prevent leaks while resisting heat breakdown for long fluid life in hydraulic steering systems.
The heart of the 2018 AMG GT C is the 4.0-liter V8 biturbo engine, known for its aggressive power delivery and responsiveness. This powerplant operates at significantly higher temperatures than standard passenger vehicles, necessitating a lubricant with robust thermal stability. AMSOIL 5W-40 FS and 0W-40 FS are tailored to handle these extreme conditions. The 5W-40 variant provides a reliable balance for varying climates, while the 0W-40 option offers superior flow during cold starts, ensuring immediate lubrication to critical engine components. The engine oil capacity for this vehicle is 7.4 quarts when a filter is changed. It is crucial to check the oil level after refill and torque the oil drain plug to the specified 22 ft/lbs to ensure a proper seal without damaging the threads.
Beyond the engine, the cooling system plays a vital role in managing the thermal load of the AMG GT C. The system holds 15 quarts of coolant, making the volume of fluid a critical factor in maintaining the correct mixture ratio. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a 50/50 pre-mix formulation that is ethylene glycol-based, designed to protect all cooling system metals, gaskets, and hoses. It is free from phosphates, nitrates, nitrites, silicates, borates, and amines, ensuring compatibility with all other antifreeze colors. For owners who prefer to mix their own coolant, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers a concentrated alternative. This product provides protection for up to 150,000 miles in passenger cars and up to 1,000,000 miles in heavy-duty applications, significantly extending the time between flushes. Both options ensure that the engine remains within safe operating temperatures even during track days or hot summer drives.
Braking and steering systems also demand high-performance fluids to maintain the vehicle’s precise handling characteristics. The AMG GT C utilizes a hydraulic power steering system that benefits from the AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid. This fluid is formulated for quiet operation and offers excellent high-temperature protection and low-temperature performance, ensuring smooth steering feedback in all weather conditions. For the braking system, the AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid meets the stringent requirements of Mercedes-Benz. It provides a stable viscosity over a wide temperature range, ensuring excellent ABS and traction-control responsiveness. This synthetic fluid helps maintain the integrity of the braking system under the extreme pressure generated by the high-performance tires and lightweight chassis of the GT C.
Vehicle Background and Performance Profile
The 2018 Mercedes-Benz AMG GT C represents the pinnacle of performance engineering within the AMG GT lineup. Introduced as a coupe model, it sits above the standard GT and GT S, offering a more aggressive driving character and higher performance capabilities. The vehicle is powered by the M178 engine, a 4.0-liter twin-scroll turbocharged V8 that is hand-built by AMG technicians. This engine is a marvel of modern automotive engineering, featuring a 90-degree cylinder bank angle and crossplane crankshaft design that contributes to its distinctive exhaust note and linear power delivery. The AMG GT C produces approximately 550 horsepower and 502 lb-ft of torque, allowing for a 0-60 mph time of around 3.6 seconds.
Owners of the AMG GT C appreciate the vehicle’s sharp handling and track-ready capabilities. The rear-wheel-drive chassis, combined with an electronic limited-slip differential and adaptive suspension, provides a dynamic driving experience that is both engaging and precise. The interior is driver-focused, with high-quality materials and digital instrumentation that display critical performance data. Despite its high-performance nature, the AMG GT C is designed as a grand tourer, capable of handling daily driving tasks with surprising comfort, provided it is maintained correctly.
While the vehicle is built to withstand high stress, there are common issues that can arise over time, particularly with the high-performance engine. One known problem area is oil consumption, where the high temperatures and pressures can lead to increased oil usage over time. Using a high-quality synthetic oil like AMSOIL FS can help mitigate this issue by providing a more robust film strength that resists breakdown and evaporation. Another common concern involves the turbocharger system, which can suffer from carbon buildup and oil coking if the engine is shut down immediately after hard driving. AMSOIL’s high thermal stability helps keep the oil cleaner for longer, reducing the likelihood of carbon deposits forming on turbo bearings and vanes.
Additionally, the cooling system in high-performance vehicles is prone to overheating if the coolant degrades or loses its corrosion inhibitors. The aggressive nature of the engine can accelerate wear on hoses and metal components if the coolant is not maintained. Using a premium antifreeze like the AMSOIL OAT formulation helps prevent corrosion and maintains the cooling efficiency of the radiator and intercoolers. Finally, the brake fluid in these vehicles can absorb moisture over time, leading to a spongy pedal feel and reduced braking performance. The AMSOIL DOT 3 and DOT 4 Synthetic Brake Fluid resists moisture absorption and maintains a high boiling point, ensuring consistent braking performance even after repeated hard stops.
In summary, the 2018 Mercedes-Benz AMG GT C is a vehicle that rewards attentive maintenance with exceptional performance and longevity. By utilizing the correct synthetic fluids, owners can ensure that their AMG GT C continues to deliver the thrilling driving experience it was designed to provide. Whether you are driving on the open road or pushing the limits on the track, AMSOIL products offer the protection necessary to keep this high-performance machine running smoothly for years to come.