The 2007 Chrysler 300 equipped with the 3.5-liter V6 engine is a vehicle known for its comfortable ride, spacious interior, and robust powertrain. However, to ensure this sedan continues to perform reliably for years to come, maintaining a rigorous lubrication schedule is essential. This engine, identified by code [G], requires specific viscosities and fluid capacities to operate within optimal parameters. Using the correct oils and fluids prevents wear, reduces engine noise, and maintains efficiency under varying driving conditions.
Recommended AMSOIL Products
- AMSOIL Signature Series 10W-30 100% Synthetic Motor Oil – Offers maximum engine protection for up to 25,000 miles or one year, ideal for extending intervals while safeguarding against horsepower loss and wear.
- AMSOIL Extended-Life 10W-30 100% Synthetic Motor Oil – Provides a balanced approach with 37% more cleaning power to keep the engine running smoother, offering guaranteed protection for up to 20,000 miles.
- AMSOIL OE 10W-30 100% Synthetic Motor Oil – A cost-effective option that fights sludge and deposits while outperforming conventional oils, with protection for up to 10,000 miles.
- AMSOIL 10W-30 100% Synthetic High-Mileage Motor Oil – Specifically formulated for vehicles with over 75,000 miles to boost detergency, reduce sludge, and improve seal condition for up to 12,000 miles.
- AMSOIL Oil Filter EAO42 – Designed for extended service life with 99% filtering efficiency at 20 microns to reduce wear on critical engine components.
- WIX Oil Filter 51085 – A premium aftermarket option featuring improved media over original equipment manufacturer filters for reliable protection.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A pre-mixed 50/50 formulation that protects all cooling system metals and hoses for up to 150,000 miles or 5 years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated, safer coolant option that requires mixing with water, offering exceptional corrosion protection and a long service life.
- AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Withstands heavy towing, elevated temperatures, and challenges terrain while ensuring smooth, shudder-free shifts.
- AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – A reliable choice that resists sludge, guards against leaks, and promotes smooth shifts for the NAG1 transmission.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Essential for the front differential, providing advanced wear protection and containing friction modifiers for limited-slip applications.
- AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube – Required for rear differentials (198mm, 210mm, and 215mm models) to handle high loads and reduce operating temperatures.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Maintains stable viscosity across a wide temperature range for excellent ABS and traction-control responsiveness.
- AMSOIL P.i. Performance Improver – Restores lost horsepower and cleans fuel injectors, helping to improve fuel economy and control pre-ignition knock.
Engine Oil and Filter Specifications
The heart of your 2007 Chrysler 300, the 3.5-liter V6, relies heavily on high-quality lubrication to manage the heat and stress generated by its operation. For this engine, the required oil grade is 10W-30. The oil pan capacity for a standard drain and filter replacement is 6.0 quarts. It is crucial to verify the oil level after refilling to ensure the crankshaft is fully submerged for proper lubrication. The torque specification for the oil drain plug is 20 ft/lbs, ensuring a secure seal without damaging the threads.
Choosing the right viscosity is vital. The 10W-30 grade offers the best balance of flow at startup and film strength at operating temperature for this engine. AMSOIL Signature Series 10W-30 stands out as a top choice for maximum durability, offering 75% more protection against horsepower loss and wear compared to industry standards. It can last up to 25,000 miles or one year, which is significantly longer than the intervals required by most conventional oils. This extended service life not only reduces maintenance frequency but also minimizes the risk of sludge buildup, a common issue in older engines.
For owners who prefer a slightly more conventional interval or are on a budget, the AMSOIL Extended-Life 10W-30 is an excellent alternative. It provides 20,000 miles of protection and features enhanced cleaning power to help keep the engine running smoothly for longer. If you have a vehicle with over 75,000 miles, the AMSOIL 10W-30 High-Mileage Motor Oil is specifically designed with a unique chemistry to reduce oil consumption, boost detergency, and protect aging seals. This formula helps to clean away sludge and reduce wear on older components, extending the life of the engine.
Filter selection is equally critical. A high-quality filter ensures that contaminants are removed from the oil before they can cause abrasion to the bearings and camshaft. The AMSOIL Oil Filter EAO42 is engineered for extended service life, allowing for lower restriction to keep engine parts well-lubricated even under high demand. It boasts a filtering efficiency of 99% at 20 microns, capturing small, wear-causing contaminants that standard filters might miss. For those who prefer a widely available OEM-style replacement, the WIX Oil Filter 51085 offers premium media that provides improvements over original equipment manufacturer branded filters.
Transmission and Differential Maintenance
The 2007 Chrysler 300 is often equipped with the NAG1 automatic transmission, which benefits greatly from synthetic fluids. The total fill capacity for the transmission is 8.1 quarts, with an initial fill capacity of 5.3 quarts. Using a synthetic automatic transmission fluid like the AMSOIL Signature Series Multi-Vehicle ATF helps to withstand the rigors of heavy towing, elevated temperatures, and challenging terrain. This fluid remains fluid in sub-zero temperatures and provides reserve protection during heavy use, ensuring smooth, shudder-free shifts and reducing the risk of transmission failure.
For the differential, the specific fluid requirement depends on the model year and the size of the ring gear. The front differential on the 175mm FIA model requires a GL-5 rated 75W-90 synthetic oil, with a capacity of 1.3 pints. The rear differential varies by specific axle assembly. Models with a 198mm rear differential require 3 pints of 75W-140 gear lube, while the 210mm and 215mm rear differentials require 3.4 pints each. All these models require synthetic oil. AMSOIL SEVERE GEAR® 75W-90 is ideal for the front axle, offering control over thermal runaway and protection against rust and corrosion. For the rear axles, the 75W-140 variant provides advanced protection against wear and friction, essential for maintaining the longevity of the differential gears and bearings.
Cooling System and Other Fluids
Keeping the engine at the correct temperature is paramount for longevity. The cooling system capacity for the 3.5L engine is 11.1 quarts. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a 50/50 pre-mixed formulation that eliminates the need for mixing with water, simplifying the refill process. It is engineered to exceed OEM requirements and protects all cooling system metals, gaskets, and hoses. For a safer, more environmentally friendly option, the AMSOIL Propylene Glycol Antifreeze is a concentrated formula that requires mixing with distilled water. It offers protection up to 150,000 miles or 5 years and greatly surpasses standards for metallic corrosion and erosion.
AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid is another critical area. The 2007 Chrysler 300 uses a DOT 3 hydraulic brake fluid that must meet the MS-4574 specification. This fluid provides stable viscosity over a wide temperature range, ensuring excellent responsiveness in the ABS and traction control systems, even under heavy braking conditions. Additionally, the power steering system, which uses ATF+4 compatible fluid, can also benefit from the AMSOIL Signature Series Multi-Vehicle ATF or AMSOIL OE Multi-Vehicle ATF to promote smooth operation and prevent sludge buildup.
About the Vehicle: The 2007 Chrysler 300
When the 2007 Chrysler 300 hit the showrooms, it signaled a bold new direction for the brand, marking a return to form for American luxury sedans. The vehicle is built on the LX platform, which it shares with the Dodge Charger, but it distinguishes itself with a more refined, upscale interior and a distinctive exterior design that drew heavy inspiration from the classic Chrysler 300s of the 1950s. The body features long, flowing lines, a wide stance, and a prominent grille that commands attention on the road. It was designed to offer a driving experience that combined the comfort of a large luxury sedan with the handling dynamics of a sportier coupe.
Under the hood, the 3.5-liter V6 engine code [G] is a workhorse known for its smooth power delivery and reliability. While not as high-horsepower as the V8 options available in other trims, the 3.5L provides ample torque for a heavy sedan, making it a popular choice for families and daily commuters who prioritize fuel efficiency and smoothness over outright speed. The engine produces a steady stream of power that feels linear as you apply the throttle, making it a comfortable companion for long highway cruises. It is paired with a 5-speed automatic transmission that has evolved over the years to offer smoother shifts and better fuel economy.
Owners often cite the spacious cabin as a major selling point. The interior is designed with high-quality materials, including available leather seating, wood trim accents, and a dashboard layout that places controls within easy reach. Despite its size, the 300 offers a surprisingly compliant ride quality, effectively absorbing road imperfections thanks to its sophisticated suspension tuning. The rear seats provide ample legroom, making it a practical choice for carrying passengers in comfort. The vehicle’s design was a hit in the market, proving that American manufacturers could produce a full-size luxury sedan that competed effectively with European imports.
Like many vehicles of its age, the 2007 Chrysler 300 can develop specific issues as it accumulates mileage. One common problem reported by owners is excessive oil consumption in the 3.5L engine. Over time, the piston rings can become stuck or worn, leading to increased oil usage. Using a high-mileage synthetic oil like the AMSOIL 10W-30 High-Mileage Motor Oil, with its enhanced detergent package and seal conditioners, can help address this issue by reducing sludge that causes ring sticking and conditioning the valve stem seals.
Another potential issue is sludge buildup in the timing chain area and other engine internals. The timing chain tensioner can suffer from oil starvation, leading to a rattling noise. Synthetic oils with superior thermal stability and anti-wear properties, such as the AMSOIL Signature Series 10W-30, help maintain cleaner internal engine components, ensuring proper lubrication to the timing chain tensioners and reducing the risk of premature wear. Additionally, some owners may experience transmission shudder or delayed shifts as the fluid degrades. Switching to a synthetic transmission fluid like the AMSOIL Signature Series ATF can help eliminate shudder by maintaining the correct friction modifiers and preventing the fluid from breaking down under heat.
Finally, cooling system failures can occur due to radiator or water pump issues, often exacerbated by old coolant. The use of a high-quality antifreeze like the AMSOIL Passenger Car & Light Truck Antifreeze & Coolant can prevent corrosion and scaling in the cooling passages, helping to keep the engine at optimal operating temperatures and preventing overheating. By addressing these known vulnerabilities with premium lubricants, owners can significantly extend the service life of their 2007 Chrysler 300 and enjoy reliable performance for years to come.
Maintaining your 2007 Chrysler 300 does not have to be complicated. By following the recommended fluid specifications and choosing high-performance synthetic lubricants, you ensure that your vehicle operates at its best. Whether you are driving through extreme heat or cold, towing a load, or simply commuting to work, the right oils and fluids will provide the protection your engine and transmission need. With AMSOIL products, you gain the confidence that your vehicle is being cared for with the highest quality lubricants available, ensuring a smoother, cleaner, and more efficient drive for the long haul.