The 2009 Jeep Grand Cherokee equipped with the 5.7-liter V8 engine relies on precise lubrication to maintain optimal performance, especially given the torque demands of the HEMI powerplant. Proper fluid maintenance is critical for extending the life of the engine, transmission, and drivetrain components. Using the correct viscosity and meeting the specific manufacturer specifications ensures that critical components like turbochargers, bearings, and gears remain protected against wear, extreme temperatures, and sludge buildup.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil – Offers unsurpassed engine protection with up to 25,000 miles of guaranteed service intervals, making it ideal for drivers who prioritize maximum performance and longevity.
- AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil – Provides a balance of cleaning power and protection for up to 20,000 miles between changes, helping to keep the engine running smoothly over the long term.
- AMSOIL OE 5W-20 100% Synthetic Motor Oil – An excellent choice for outperforming conventional oils and meeting original equipment specifications with a high-performance 100% synthetic formulation.
- AMSOIL 5W-20 100% Synthetic High-Mileage Motor Oil – Specifically formulated for engines with over 75,000 miles, featuring boosted detergents and anti-wear additives to reduce sludge and restore performance.
- AMSOIL Oil Filter – Delivers filtering efficiency of 99 percent at 20 microns, allowing lower restriction to keep engine parts lubricated while capturing small, wear-causing contaminants.
- WIX Oil Filter – A premium OEM-style filter option that offers improved media efficiency to help protect your engine against abrasive particles.
- WIX Air Filter – Features premium media designed to improve upon original equipment manufacturer filters, ensuring clean airflow for efficient combustion.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique phosphate- and silicate-free OAT formulation that protects cooling system metals, gaskets, and hoses for up to 150,000 miles or 5 years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated, non-ethylene glycol option that provides superior corrosion and erosion protection and can be used in a wide variety of passenger cars and light trucks.
- AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of heavy towing, elevated temperatures, and challenging terrain while maintaining fluidity in sub-zero conditions.
- AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Protects against wear and sludge while promoting smooth, shudder-free shifts in compatible automatic transmissions.
- WIX Transmission Filter – A premium media filter designed to improve upon OEM-branded options, specifically selected for the 545RFE transmission application to ensure reliable filtration.
- AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube – Provides advanced protection against wear and thermal runaway for front and rear differentials, including limited-slip applications.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures excellent ABS and traction-control responsiveness with a stable viscosity over a wide temperature range.
Understanding the specific needs of your 2009 Grand Cherokee is the first step in a successful maintenance routine. The 5.7-liter V8 engine, often referred to as the HEMI, produces significant torque and power. To handle this output, the lubrication system must provide a robust film strength to prevent metal-to-metal contact under load. The engine oil capacity for this vehicle is 7.0 quarts when a filter change is included. This volume is crucial to ensure proper oil levels are maintained across the pickup tube and oil pan, especially when the vehicle is tilted or climbing steep grades, which is common for this type of SUV.
When selecting the correct oil, you have several high-quality options. The AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil is a top-tier choice, offering up to 75% more protection against horsepower loss and wear compared to conventional oils. It is trusted by professional engine builders for its ability to reduce friction and heat. For those seeking extended service intervals without sacrificing protection, the AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil provides 37% more cleaning power to help keep the engine running smoother for longer periods. If you are looking for a cost-effective solution that outperforms conventional oils and aligns with OEM mileage expectations, the AMSOIL OE 5W-20 100% Synthetic Motor Oil is an excellent alternative. For vehicles that have accumulated over 75,000 miles, the AMSOIL 5W-20 100% Synthetic High-Mileage Motor Oil contains enhanced anti-wear additives and a boosted detergent package that can reduce sludge by 67%.
Filtering the oil is just as important as the oil itself. The AMSOIL Oil Filter, code EAO11-EA, is engineered to provide a filtering efficiency of 99 percent at 20 microns. This high level of filtration helps reduce engine wear by capturing contaminants that would otherwise circulate through the lubrication system. It features a higher capacity for small particles than many competing filters, ensuring that the oil remains clean for the duration of the change interval. Alternatively, the WIX Oil Filter, code 57899-EA, offers premium media that improves upon original equipment manufacturer standards, providing a reliable filtration solution for drivers who prefer this brand.
Transmission and Drivetrain Fluids
The power from the 5.7-liter engine is transferred to the wheels through a robust automatic transmission, typically the 545RFE. Maintaining this transmission is critical for smooth shifting and longevity. For the 545RFE RWD transmission, the total fill capacity is 14.1 quarts, while the initial fill is approximately 5.5 quarts. For 4WD models, the total fill remains 14.1 quarts, with an initial fill of 6.6 quarts. The vehicle requires Mopar ATF+4 specification fluid, which can be effectively matched by AMSOIL Synthetic Automatic Transmission Fluids.
The AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid is designed to withstand the rigors of heavy towing, elevated temperatures, and challenging terrain. It remains fluid in sub-zero temperatures, ensuring reliable performance regardless of the climate. For those who prefer a value-oriented option that still delivers synthetic performance, the AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid is an outstanding choice. It resists harmful sludge, protects against wear, and guards against leaks, promoting smooth, shudder-free shifts. Complementing these fluids is the WIX Transmission Filter, code 58843-EA, which features premium media to improve filtration beyond OEM standards for the 545RFE transmission, ensuring that debris is captured before it can cause damage.
The drivetrain also includes a transfer case and differential units that require specialized lubrication. The NV140 transfer case requires 1.5 pints of fluid, while the NV245 transfer case requires 3.8 pints. For these components, you can utilize the AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid or the AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid, as they meet the necessary Mopar ATF+4 specifications. For the transfer case, the NV245 can also utilize AMSOIL 5W-30 100% Synthetic Tractor Hydraulic/Transmission Oil, which offers excellent hot- and cold-weather protection and reduces the need for seasonal change-outs.
Differential lubrication is equally vital, particularly for models with limited-slip differentials. The front C200F and rear C213R units require 75W-140 synthetic oil. The AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube is specifically formulated for these applications. It controls thermal runaway, protects against rust and corrosion, and contains friction modifiers for limited-slip applications. Note that for limited-slip differentials, an additional 4 oz of Mopar limited-slip additive is recommended to be added to the gear lube. The rear C213RE limited-slip differential requires 4.4 pints, while the front limited-slip C200FE requires 3.6 pints. Using the correct gear lube ensures that the gears and bearings remain lubricated under the high loads typical of off-road driving or towing.
Coolant, Brakes, and Fuel System Care
Maintaining the cooling system is essential to prevent overheating, which can be a concern in older vehicles or under heavy load. The AMSOIL Propylene Glycol Antifreeze and Engine Coolant capacity for the 2009 Grand Cherokee 5.7L is 14.5 quarts. You have the option of using AMSOIL Passenger Car & Light Truck Antifreeze & Coolant, a phosphate-free, silicate-free OAT formulation that protects all cooling system metals and hoses for up to 150,000 miles or 5 years. Alternatively, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant is a concentrated option that requires mixing with distilled water, offering great corrosion and erosion protection for both passenger cars and light trucks.
Braking performance must never be compromised. The 2009 Jeep Grand Cherokee requires a DOT 3 or DOT 4 hydraulic AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid. It provides excellent responsiveness for ABS and traction control systems. It maintains a stable viscosity over a wide temperature range, ensuring consistent braking power whether you are driving in the heat of summer or the cold of winter.
For fuel system maintenance, keeping the combustion process efficient is key to maintaining fuel economy and power. The AMSOIL P.i.® Performance Improver Gasoline Additive is highly effective in this regard. It restores up to 14% horsepower and brings GDI fuel injectors back to 100% flow rate after just one tank of fuel. This additive helps reduce the need for costly higher-octane fuel and controls pre-ignition knock. Additionally, AMSOIL Upper Cylinder Lubricant Corrosion Inhibitor lubricates the fuel system and upper cylinders, offering protection against corrosion and ensuring smooth operation.
About the Vehicle
The 2009 Jeep Grand Cherokee represents a significant model in the history of Jeep’s mid-size SUV line. Built on the popular WK2 platform, this generation was known for blending rugged off-road capability with a level of on-road comfort that was not always expected from a body-on-frame vehicle. The 5.7-liter HEMI V8 engine is the heart of the most popular trim levels, delivering robust power that makes it a favorite for drivers who need to tow trailers, haul cargo, or simply enjoy spirited driving. The “HEMI” branding itself carries a legacy of performance engineering from the Mopar division, known for its hemispherical combustion chambers that promote efficient airflow and power generation.
Owners of the 2009 Grand Cherokee often praise its versatility. It serves as a capable all-weather vehicle, handling snow and rough terrain with the aid of its quadra-trac or quadra-drive II 4WD systems. The interior space is generous, offering seating for five or seven passengers depending on the configuration, which makes it a practical family hauler. The suspension tuning in this era strikes a balance between ride comfort and the stability needed for cornering and towing. While the vehicle has seen many years of service, its mechanical simplicity and the availability of a robust aftermarket support community ensure that it remains a viable and rewarding vehicle for enthusiasts and practical drivers alike. With regular maintenance using high-quality synthetic fluids, the 5.7L Grand Cherokee can continue to provide years of reliable service.