The 2023 Genesis G90 is a flagship luxury sedan that combines powerful performance with sophisticated engineering. Under the hood, the 3.5L V6 twin-turbocharged engine demands high-quality lubrication to manage the intense heat and pressure generated by the turbochargers and the high-revving nature of the powerplant. Using the correct AMSOIL fluids ensures that every component, from the oil pump to the transmission and differential, operates with minimal friction and maximum protection. This comprehensive guide details the specific fluids required to maintain the longevity and performance of this premium vehicle.
Recommended AMSOIL Products
- AMSOIL Signature Series 0W-30 100% Synthetic Motor Oil – Provides superior protection against horsepower loss and wear for this twin-turbo engine.
- AMSOIL 0W-30 MS 100% Synthetic European Motor Oil – A specialized formula designed for the unique demands of European-style vehicles.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands heavy towing, elevated temperatures, and challenging terrain while remaining fluid in sub-zero conditions.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Offers reliable wear protection for the automatic transmission.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique OAT formulation that protects all cooling system metals, gaskets, and hoses.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option that requires mixing with water, offering extended protection up to 150,000 miles.
- AMSOIL SEVERE GEAR® 75W-85 100% Synthetic Gear Lube – Controls thermal runaway and protects against rust in the front and rear differentials.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures excellent ABS and traction-control responsiveness with stable viscosity across a wide temperature range.
Optimal Engine Oil Specifications
Proper lubrication is the lifeblood of the 2023 Genesis G90’s 3.5L 6-cylinder twin-turbo engine. This powerplant is engineered for performance, and the synthetic oil you choose must handle extreme thermal stress without breaking down. The manufacturer requires synthetic oil for this engine to ensure durability and efficiency. The oil capacity for a standard change, including the filter replacement, is 7.4 quarts. When performing a service, it is crucial to check the oil level after refilling and to torque the oil drain plug to the correct specification of 25-33 ft/lbs. Always replace the drain plug gasket during this process to prevent leaks.
For the best protection, AMSOIL Signature Series 0W-30 100% Synthetic Motor Oil is the top recommendation. This fluid offers 75% more engine protection against horsepower loss and wear compared to industry standards. It is specifically designed to protect turbochargers 72% better than required by the GM dexos1 Gen 2 specification, ensuring that the boost systems in your G90 remain cool and efficient. Trusted by professional engine builders, it provides guaranteed protection for up to 25,000 miles or one year.
For those seeking an alternative formulation specifically for European vehicles, AMSOIL 0W-30 MS 100% Synthetic European Motor Oil is an excellent choice. This oil features a precise blend of synthetic base oils and premium additives tailored to the unique demands of gasoline, diesel, and hybrid European vehicles. It delivers a comparable level of protection while meeting the specific requirements of the G90’s engineering.
Transmission and Drivetrain Care
The automatic transmission in the 2023 G90 is a complex component that benefits greatly from high-quality synthetic fluid. The 8-speed transmission requires 9.7 quarts for a total fill. Using a fluid designed to handle the rigors of heavy towing, elevated temperatures, and challenging terrain is essential for long-term health. AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid remains fluid in sub-zero temperatures and provides reserve protection during heavy use and abuse. It helps the transmission operate smoothly under load, preventing sludge buildup and wear.
If a more cost-effective option is preferred, AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid provides strong wear protection while maintaining the fuel efficiency of the vehicle. Both fluids are designed to outperform standard factory fills and keep the transmission running quietly and efficiently.
The drivetrain differential and transfer case also require specialized lubrication. The front differential GL-5 requires 1.5 pints of 75W-85 synthetic gear oil, while the rear differential GL-5 requires 2.7 pints of the same grade. AMSOIL SEVERE GEAR 75W-85 100% Synthetic Gear Lube is ideal for these applications. It contains friction modifiers for limited-slip applications, controls thermal runaway, and protects against rust and corrosion. This gear lube helps reduce operating temperatures, extending the life of the seals and equipment.
Cooling System and Fluids
Maintaining the cooling system is vital for a twin-turbo engine. The intercooler requires 4.2 quarts of AMSOIL Passenger Car & Light Truck Antifreeze & Coolant, while the engine itself requires 10.4 quarts. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a pre-mixed 50/50 ethylene glycol formulation that protects all cooling system metals, gaskets, and hoses. It is free from phosphates, nitrates, nitrites, silicates, borates, and amines, making it compatible with all other antifreeze colors and safe for long-term use. This fluid offers protection up to 150,000 miles or 5 years.
For those who prefer to mix their own coolant, AMSOIL Propylene Glycol Antifreeze and Engine Coolant is a concentrated option. It requires mixing with distilled or high-quality water and offers protection up to 150,000 miles in passenger cars. It greatly surpasses standards for metallic corrosion and erosion, ensuring the engine stays at the optimal operating temperature.
Finally, the braking system requires fluid that maintains its properties under high pressure and temperature. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid provides excellent ABS and traction-control responsiveness. It ensures a stable viscosity over a wide temperature range, giving you confidence when stopping in various conditions. This fluid meets FMVSS116 DOT-4 requirements, ensuring compatibility with the G90’s braking systems.
About the 2023 Genesis G90
The 2023 Genesis G90 stands as a testament to the luxury sedan segment, offering a driving experience that rivals the finest from Germany. As the flagship model of Hyundai’s premium Genesis brand, the G90 is designed for those who demand the highest levels of comfort, technology, and performance. Powered by the 3.5L V6 twin-turbocharged engine, it delivers a robust and linear power delivery that is both smooth and responsive.
This vehicle is built on the Genesis Premium RWD platform, which provides a well-balanced chassis and a refined ride quality. Owners of the G90 often cite its quiet cabin, luxurious materials, and advanced driver assistance systems as key highlights. The interior is typically equipped with high-end amenities, including premium leather, advanced climate control, and a state-of-the-art infotainment system. The exterior styling is bold yet elegant, featuring a distinctive cascading grille and sleek LED lighting.
Genesis vehicles are known for their meticulous build quality and long warranty coverage, which appeals to buyers looking for peace of mind. The G90, in particular, is positioned as a full-size luxury sedan that challenges established leaders in the market. Its twin-turbo V6 engine is paired with an 8-speed automatic transmission, offering seamless gear shifts and efficient power delivery. Whether navigating city streets or cruising on the highway, the G90 provides a serene and powerful driving experience that defines the luxury category.
Proper maintenance is key to preserving the value and performance of this luxury sedan. By using the recommended AMSOIL products, you ensure that every aspect of your G90 is protected against wear and tear. From the engine oil that handles the heat of the turbos to the gear lube that protects the drivetrain, these fluids work together to keep your vehicle running at its best. This commitment to quality lubrication not only extends the life of the vehicle but also enhances the driving experience, ensuring that the G90 remains a pleasure to drive for years to come.