The 2022 BMW 745e xDrive is a sophisticated plug-in hybrid luxury sedan that relies on precision engineering to deliver power and efficiency. The vehicle is powered by a 3.0L turbocharged inline-six engine (Engine Code B58B30M0 K) paired with an electric motor and an xDrive all-wheel-drive system. This combination creates a unique lubrication environment where the engine frequently operates under load from the turbocharger while also experiencing the unique thermal cycles of a hybrid powertrain. Owners of this vehicle understand that maintaining the factory-recommended fluid specifications is critical not just for warranty compliance, but for preserving the performance characteristics that define the BMW driving experience. Using the correct viscosity and formulation ensures that engine components remain protected against wear, while the transmission fluid handles the complex shifting demands of the hybrid system.
Recommended AMSOIL Products
- AMSOIL 0W-20 LS 100% Synthetic European Motor Oil – A specialized oil designed for the unique demands of European gasoline and hybrid vehicles, featuring precise synthetic base oils to protect against turbocharger stress and sludge.
- WIX Oil Filter (WL10342-EA) – A premium media filter that offers improvements over original equipment manufacturer-branded filters to ensure maximum oil flow and contaminant trapping for this specific BMW model.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A ready-to-use 50/50 ethylene glycol pre-mix formulation that protects cooling system metals, gaskets, and hoses for up to 150,000 miles.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated, environmentally friendly coolant option that offers protection up to 150,000 miles and greatly surpasses standards for metallic corrosion and erosion.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Specifically formulated for the 8-speed automatic transmission (8P75XPH) to withstand elevated temperatures, heavy towing, and challenging terrain while maintaining fluidity in sub-zero conditions.
Selecting the right lubricants for a high-performance vehicle like the 2022 BMW 745e xDrive goes beyond simply meeting the viscosity grade on the oil cap. The BMW B58 engine is renowned for its robust engineering, but its turbocharged nature and hybrid integration mean the oil is subjected to extreme thermal loads and frequent cold starts. Standard oils can degrade faster under these conditions, leading to increased deposit formation and reduced efficiency. AMSOIL 0W-20 LS 100% Synthetic European Motor Oil is formulated specifically for these European applications. It features a precise blend of synthetic base oils and premium additives designed to resist shear, oxidation, and sludge, ensuring the engine remains clean and the turbocharger bearings receive adequate lubrication even during spirited driving.
Fluid capacity is another critical detail that owners must know before performing maintenance. For the engine oil service on this vehicle, the total capacity is 6.9 quarts when including the filter change. This volume is required to fill the lubrication circuit completely after an oil change. It is vital to refill to this capacity and then check the oil level after the refill to ensure proper lubrication coverage. The oil drain plug should be torqued to 18 ft/lbs, and the drain plug seal must be replaced to prevent leaks. The WIX Oil Filter, with product code WL10342-EA, is engineered to match the flow requirements of the B58 engine, ensuring that oil is circulated without restriction while trapping abrasive particles that could damage the engine.
Cooling and Hybrids
The cooling system on the 2022 BMW 745e xDrive requires specific attention due to the heat generated by the turbocharged engine and the hybrid components. The system utilizes a complex network of hoses and radiators that require a coolant formulation compatible with BMW standards. For vehicles equipped with code S823A7, the total coolant capacity is 7.6 quarts. For the High-Temperature Coolant Circuit (HTCC), the capacity is 6.6 quarts, while the Low-Temperature Coolant Circuit (LTCC) holds 2.7 quarts. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a phosphate, nitrate, nitrite, silicate, borate, and amine-free ethylene glycol solution. This formula is designed to protect all cooling system metals, gaskets, and hoses, offering protection for up to 150,000 miles or five years, whichever comes first.
For owners who prefer a concentrated coolant, AMSOIL Propylene Glycol Antifreeze and Engine Coolant provides a flexible option. This product requires mixing with distilled or high-quality water to achieve the optimal freezing and boiling points. It is compatible with all other antifreeze and coolant colors and offers protection against corrosion and erosion that greatly surpasses industry standards. The concentrated form allows for precise adjustment to local climate conditions, ensuring the engine stays within its optimal operating temperature range regardless of external weather.
Transmission and Drivetrain
The drivetrain of the 2022 BMW 745e xDrive includes an 8-speed automatic transmission (model 8P75XPH). This transmission is engineered to handle the combined torque of the gasoline and electric motors. To maintain shift quality and longevity, using the correct fluid is essential. The total fill capacity for the 8-speed automatic transmission is 9.2 quarts. AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is designed to meet and exceed the rigorous requirements of this transmission. It remains fluid in sub-zero temperatures and provides reserve protection during heavy use, such as heavy towing or extended high-speed driving, ensuring the transmission operates smoothly and efficiently for the long haul.
While no specific recommendations are currently available for the transfer case, differential, brake fluid, or power steering fluid in the source data, owners should consult their specific vehicle manual for those intervals. For fuel system maintenance, AMSOIL P.i. Performance Improver Gasoline Additive can help maintain fuel injector flow and restore horsepower. Additionally, for seasonal storage, AMSOIL Gasoline Stabilizer can keep fuel fresh for up to 12 months, protecting against varnish and gum buildup.
Vehicle Background
The 2022 BMW 745e xDrive represents the pinnacle of BMW’s engineering in the luxury sedan segment. As part of the F01/F02 generation (specifically the final update cycles for this platform), this vehicle combines the plush, limousine-like ride quality expected of the 7 Series with the cutting-edge technology of BMW’s plug-in hybrid system. The vehicle is powered by the B58 3.0-liter turbocharged inline-six engine, a powerplant that has received widespread acclaim for its reliability, smooth power delivery, and adaptability across various BMW models.
What sets the 745e apart is its electrified powertrain. The integration of an electric motor allows for significant torque fill from a standstill, enhancing acceleration and providing a unique driving character that blends the instant response of electric power with the sustained high-rpm pull of the turbocharged engine. The “xDrive” designation indicates BMW’s sophisticated all-wheel-drive system, which intelligently distributes power between the front and rear axles to optimize traction and handling in all weather conditions. This combination makes the 745e a formidable competitor in the luxury hybrid market, offering a driving experience that is both efficient and dynamic.
Owners of the 2022 BMW 745e xDrive typically value the vehicle for its blend of comfort, performance, and advanced technology. The interior is spacious and often features the latest infotainment systems, including augmented reality navigation and driver assistance features. However, the complexity of this vehicle introduces specific maintenance challenges that distinguish it from standard sedans. The high-performance nature of the B58 engine, combined with the heat generated by the hybrid components and turbocharger, places a premium on the quality of lubricants used. Using inferior fluids can accelerate wear on critical components, leading to expensive repairs.
Common issues or concerns for owners of this vehicle that can be mitigated with high-quality synthetic lubricants include:
- Turbocharger Wear: The turbocharger operates at extremely high temperatures and RPMs. Standard oils can break down under these conditions, leading to sludge buildup in the turbo bearings. AMSOIL synthetic oil maintains its viscosity and lubricity at extreme heat, ensuring the turbocharger spins freely and cools down effectively.
- Oil Consumption and Deposits: Even though the B58 is generally reliable, high-mileage engines can experience oil consumption or carbon buildup on intake valves. Synthetic oils with superior detergents help keep internal engine components cleaner, reducing the formation of harmful deposits.
- Transmission Shift Feel: The 8-speed automatic transmission relies on precise fluid properties to execute smooth shifts, especially when managing power from both the electric motor and the engine. Synthetic transmission fluids resist thermal breakdown better than conventional fluids, maintaining shift quality and protecting the valve body.
- Cooling System Corrosion: The hybrid system adds extra heat to the cooling circuit. Over time, corrosion can develop in aluminum components. Using a high-quality, phosphate-free coolant ensures that the cooling system remains free of corrosion and scale, protecting the expensive aluminum engine block and radiator.
Regular maintenance using these specialized AMSOIL products ensures that the 2022 BMW 745e xDrive continues to deliver the performance and reliability that BMW owners expect. By addressing the specific lubrication needs of this complex hybrid powertrain, owners can maximize the vehicle’s lifespan and performance potential.