The 2007 Chrysler 300 equipped with the 5.7L HEMI V8 is a powerful sedan known for its aggressive styling and strong performance. To maintain the engine’s reliability and extend the service life of critical drivetrain components, using high-quality synthetic lubricants is essential. Standard convention oils often break down under the thermal stress of the HEMI’s Multi-Displacement System (MDS) and heavy acceleration. Switching to AMSOIL Signature Series synthetic motor oils and compatible fluids ensures superior protection against wear, reduces engine deposits, and maintains optimal viscosity across a wide temperature range. These synthetic solutions are engineered to meet and exceed the stringent requirements of this specific vehicle platform, providing peace of mind for both daily driving and spirited performance.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil – Offers up to 25,000 miles of protection and exceptional wear resistance for the 5.7L HEMI engine.
- AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil – Provides 20,000 miles of cleaning power and protection for vehicles in severe service.
- AMSOIL OE 5W-20 100% Synthetic Motor Oil – A budget-friendly synthetic option that fights sludge and deposits while delivering OEM-level protection.
- AMSOIL 5W-20 100% Synthetic High-Mileage Motor Oil – Specifically formulated for engines with over 75,000 miles to reduce leaks and consumption.
- AMSOIL Oil Filter EAO42 – Delivers 99% filtration efficiency at 20 microns and offers extended service life compatible with AMSOIL oils.
- WIX Oil Filter 51085 – A premium media filter that offers improvements over standard OEM-branded filters.
- AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Withstands heavy towing, elevated temperatures, and ensures smooth shifts in the NAG1 transmission.
- AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – A cost-effective synthetic fluid that resists sludge and promotes shudder-free shifts.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Ideal for the 175mm FIA front differential, protecting against rust and corrosion.
- AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube – Essential for the 198mm, 210mm, and 215mm rear differentials requiring synthetic lubricants.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Provides excellent ABS responsiveness and stable viscosity over a wide temperature range.
Ensuring the 5.7L V8 receives the correct lubrication starts with selecting the proper viscosity. For vehicles equipped with the Multiple Displacement System, SAE 5W-20 oil is mandatory. This specific grade is critical for the operation of the cylinder deactivation system. Using the correct weight helps maintain oil pressure when cylinders are deactivated and ensures rapid lubrication during cold starts. The engine capacity is 7.0 quarts, including the AMSOIL Oil Filter. Always check the oil level after refilling to ensure the dipstick reads within the acceptable range. The oil drain plug torque specification is 20 ft/lbs, which should be observed to prevent stripping the threads or under-torquing the plug.
For the drivetrain, the 2007 Chrysler 300 typically utilizes a NAG1 automatic transmission. This transmission has a total fill capacity of 8.1 quarts for a complete flush, though an initial fill requires approximately 5.3 quarts. Using a fluid designed for the NAG1 spec (AP4) is crucial for smooth operation and shift quality. AMSOIL offers both a Signature Series and an OE multi-vehicle formula that are compatible with these requirements, offering protection against wear and sludge even in severe driving conditions. Additionally, the transfer case and differential systems require attention. The front 175mm FIA differential requires 1.3 pints of 75W-90 synthetic AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube, while the rear differentials vary based on the specific axle model. The 198mm, 210mm, and 215mm rear differentials all require 75W-140 synthetic AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube, with capacities ranging from 3 to 3.4 pints. Synthetic lubricants are required for these units to handle the thermal loads and ensure long-term durability.
Cooling the large V8 engine is equally important. The cooling system capacity is 14.7 quarts. AMSOIL offers a Passenger Car & Light Truck Antifreeze & AMSOIL Passenger Car & Light Truck Antifreeze & Coolant that is pre-mixed and compatible with a wide variety of vehicles. This unique poly-organic acid (OAT) formulation protects all cooling system metals, gaskets, and hoses for up to 150,000 miles or 5 years. For those who prefer mixing their own concentrate, AMSOIL Propylene Glycol Antifreeze is another excellent option, offering extended service life and superior corrosion protection. It is phosphate, nitrate, nitrite, silicate, borate, and amine-free, making it compatible with all other antifreeze and AMSOIL Propylene Glycol Antifreeze and Engine Coolant colors without risking chemical reactions.
The braking system of the Chrysler 300 benefits from AMSOIL DOT 3 and DOT 4 100% Synthetic AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid. This fluid provides stable viscosity across a wide temperature range, ensuring excellent ABS and traction-control responsiveness. Power steering systems on this model often utilize ATF+4 specification fluids, which can be satisfied by using the AMSOIL Signature Series or OE Multi-Vehicle Automatic Transmission Fluid. For fuel system maintenance, AMSOIL P.i. Performance Improver is a powerful gasoline additive that restores fuel injectors to 100% flow rate, improves fuel economy, and helps prevent carbon buildup, which is especially beneficial for engines with higher mileage.
Vehicle Background
First introduced in 2005 for the 2005 model year, the 2007 Chrysler 300 represents a significant moment in American automotive history. It was part of the second generation of the LX platform, which also underpinned the Dodge Charger and the Chrysler 300C. This vehicle was a bold departure from the boxy, traditional designs of the past, adopting a sleek, modern aesthetic that drew inspiration from European luxury sedans. The 2007 model year specifically is often noted for refining the design language introduced in the launch year, offering improved ride quality and handling characteristics while maintaining the aggressive stance that made the car a standout on the road.
The 5.7L V8 engine code [H] K was a powerhouse under the hood, delivering a balance of torque and horsepower that appealed to a wide range of drivers. It was one of the few V8s capable of displacing cylinders via the Multi-Displacement System to improve fuel economy during light throttle operation, a technology that required precise lubrication to function correctly. The vehicle’s market position was unique; it offered a rear-wheel-drive platform with ample interior space, making it a favorite among fleets, law enforcement, and car enthusiasts alike who appreciated its smooth power delivery and comfortable ride. Its reputation as a “land yacht” was earned through its substantial size and refined suspension tuning, which absorbed road imperfections with ease.
Despite its robust build, the 2007 Chrysler 300 is not without its known maintenance considerations. One common issue involves the variable valve timing solenoids, which can stick or fail, leading to rough idling or check engine lights. Using high-quality synthetic motor oil with excellent detergency helps keep these solenoids clean and functioning smoothly, extending their lifespan. Another prevalent problem involves the cooling system components, particularly the plastic cooling tank itself, which can develop cracks over time due to heat cycling. This is where high-quality antifreeze becomes vital, as it protects the metal core and plastic hoses from corrosion and thermal stress, potentially delaying the inevitable need for component replacement.
Owners of this model may also experience issues with the transmission shifting, particularly if the fluid has not been changed regularly. The NAG1 transmission is robust but sensitive to fluid degradation; using a synthetic automatic transmission fluid can help mitigate shudder and ensure smooth transitions between gears. Additionally, the suspension components, such as the ball joints and control arm bushings, can wear out prematurely, often leading to clunking noises over bumps. While lubricants cannot fix worn bushings, using high-quality synthetic AMSOIL SEVERE GEAR® 75W-110 100% Synthetic Gear Lube in the differential and transfer case can reduce the load on these suspension components by ensuring the drivetrain rotates smoothly, minimizing vibration and stress transferred to the chassis. Regular maintenance with premium fluids is the best defense against these age-related issues, keeping the vehicle performing like new.