The 2007 Jaguar S-Type with the 3.0L AJ27 3 engine is a sophisticated vehicle that demands precise lubrication to maintain its performance and longevity. This luxury sedan features a powertrain designed for smooth operation, but it requires specific oil viscosity and fluid types to protect against wear, sludge, and extreme temperatures. Using the correct synthetic lubricants ensures that the engine components, oil filter, transmission, and other critical systems operate within their optimal parameters, extending the service life of the vehicle and preserving its driving dynamics. Below, we detail the recommended fluid capacities and AMSOIL products tailored for this specific engine code.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil – Provides unsurpassed engine protection for up to 25,000 miles, offering superior resistance to horsepower loss and wear compared to conventional oils.
- AMSOIL Extended-Life 5W-30 100% Synthetic Motor Oil – Delivers extended protection up to 20,000 miles with enhanced cleaning power to keep the engine running smoother for longer intervals.
- AMSOIL Oil Filter – Offers 99% filtering efficiency at 20 microns, reducing engine wear by capturing small contaminants and providing greater capacity than standard filters.
- WIX XP Oil Filter – Premium media offers improvements over original equipment manufacturer (OEM)-branded filters.
- WIX Oil Filter – Premium media offers improvements over original equipment manufacturer (OEM)-branded filters.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A phosphate-, nitrate-, and silicate-free 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 – Concentrated, requiring mixing with distilled or high-quality water, with protection up to 150,000 miles or 5 years.
- 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 – Protects against wear and promotes smooth, shudder-free shifts.
- AMSOIL SEVERE GEAR 75W-140 100% Synthetic Gear Lube – Advanced protection against thermal runaway and wear, specifically formulated for the rear differential to control operating temperatures and protect limited-slip applications.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Provides excellent ABS and traction-control responsiveness with stable viscosity over a wide temperature range.
- AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of heavy towing, elevated temperatures, and challenging terrain.
- AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid – Protects against wear, resists harmful sludge, and promotes smooth, shudder-free shifts.
Optimizing Engine Protection for the AJ27 Engine
The 3.0-liter AJ27 3 engine in the 2007 Jaguar S-Type is a sophisticated aluminum unit designed for smooth power delivery. To ensure this engine continues to perform as intended, the viscosity of the motor oil must align with manufacturer specifications, particularly during the first oil change and subsequent maintenance intervals. The recommended oil grade for this engine is SAE 5W-30, which provides the necessary balance of flow at startup and film strength at operating temperature. The engine requires a total capacity of 6.9 quarts when the oil filter is also replaced.
AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil is the top-tier choice for this application. It offers up to 25,000 miles of protection, a significant increase over traditional drain intervals. This oil is specifically engineered to fight sludge and deposits, which can accumulate in older luxury vehicles, ensuring the oil passages remain clear and the engine remains clean. For owners who prefer a slightly shorter interval than the maximum recommendation or drive in varying conditions, AMSOIL Extended-Life 5W-30 provides a robust alternative with up to 20,000 miles of guaranteed protection. Both oils are API licensed and formulated to handle the thermal stresses of this engine family.
Matching the oil with a high-quality filter is equally critical. The AMSOIL Oil Filter is designed to work seamlessly with synthetic motor oils. It allows for lower restriction, keeping engine parts lubricated effectively, and offers greater capacity for wear-causing contaminants than competing filters. The filter media captures particles as small as 20 microns with 99% efficiency, preventing abrasive wear on critical engine surfaces like bearings and camshafts. For those seeking OEM-quality media, the WIX Oil Filter or WIX XP Oil Filter are also excellent choices.
Maintenance of the Automatic Transmission
The 2007 Jaguar S-Type is equipped with a ZF 6HP26 six-speed automatic transmission. Maintaining the health of this transmission is vital, as fluid degradation can lead to shuddering, harsh shifts, and eventually costly internal damage. The total fill capacity for this transmission is approximately 10 quarts, though refill amounts should always be verified against the dipstick or level plug according to the vehicle’s specific maintenance guidelines.
AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is the recommended lubricant for this transmission. It is designed to withstand the rigors of heavy towing and elevated temperatures, which are common stressors for luxury sedans carrying heavy loads or driven aggressively. The fluid remains fluid in sub-zero temperatures, ensuring smooth shifts even in cold climates. It provides reserve protection during heavy use, helping to prevent the varnish and sludge buildup that can plague older transmission systems. For those seeking a more budget-friendly option that still meets the demanding requirements of the transmission, AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is also an excellent choice, offering protection against wear and sludge while promoting smooth, shudder-free shifts.
Additionally, the power steering system on this model often utilizes automatic transmission fluid. AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid or AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid provide the necessary lubricity and viscosity for smooth power steering operation.
Thermal Management and Differential Lubrication
Proper cooling is essential for the longevity of any internal combustion engine, especially one that has been in service for over a decade. The cooling system for the 2007 Jaguar S-Type holds approximately 9.9 quarts of fluid. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is formulated to exceed OEM requirements, protecting the cooling system metals, gaskets, and hoses from corrosion and erosion. Its unique poly-organic acid (OAT) formulation is compatible with all other antifreeze colors and is free of phosphates, nitrates, and silicates, making it a safe choice for the entire cooling system. For concentrated cooling needs, AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers extended protection up to 150,000 miles or 5 years.
The rear differential also requires attention to ensure smooth power delivery to the wheels. This component uses a GL-5 oil grade and requires a specific capacity of 2.7 pints. AMSOIL SEVERE GEAR 75W-140 100% Synthetic Gear Lube is the ideal lubricant for this application. It provides advanced protection against wear and helps control thermal runaway, a common issue in high-stress differential applications. The fluid also protects against rust and corrosion, ensuring the gears and bearings remain in top condition for years.
Other Essential Fluids and Additives
AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid plays a crucial role in the safety of the vehicle. The 2007 Jaguar S-Type requires a DOT 3 or DOT 4 brake fluid, with Shell DOT 4 ESL being the preferred specification. If unavailable, a low-viscosity DOT 4 fluid meeting ISO 4925 Class 6 specifications can be used. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid is designed to provide excellent ABS and traction-control responsiveness while maintaining a stable viscosity over a wide temperature range.
Vehicle Background
The 2007 Jaguar S-Type represents a significant chapter in Jaguar’s history as a blend of traditional British luxury and modern engineering. Introduced in the late 1990s as a successor to the XJ40, the S-Type was designed to compete in the competitive luxury sedan segment alongside rivals like the BMW 5 Series and the Mercedes-Benz E-Class. By 2007, the model had matured into a sophisticated package, offering a ride quality that was both plush and composed, with a reputation for handling that surpassed many of its contemporaries.
The specific 3.0L 6-cylinder engine with code [F] AJ27 3 is a naturally aspirated unit derived from Jaguar’s extensive use of aluminum construction to reduce weight and improve performance. This engine produces power in a linear, smooth manner, characteristic of the brand’s philosophy. The S-Type platform was known for its independent suspension setup, which provided a comfortable highway cruise while retaining enough agility for spirited driving. Inside, the cabin was a sanctuary of leather and wood, reflecting the craftsmanship Jaguar was renowned for.
However, like any vehicle of this age and complexity, the S-Type has specific maintenance needs that become more critical as the odometer climbs. One of the common challenges owners face is oil consumption or leaks as seals and gaskets age. Switching to a high-quality synthetic oil with a robust additive package can help condition seals and reduce sludge buildup, potentially mitigating consumption issues. For engines with over 75,000 miles, AMSOIL 5W-30 100% Synthetic High-Mileage Motor Oil offers unique chemistry with boosted detergents and enhanced anti-wear additives. Another frequent concern with the AJ-series engines is the potential for sludge accumulation if conventional oils or extended intervals are ignored. Synthetic oils excel at keeping the engine cleaner, preventing the varnish that can clog oil galleries.
Additionally, the automatic transmission in the S-Type is sensitive to fluid condition. Older fluid can lead to shuddering during acceleration or delayed shifts, which can be misdiagnosed as mechanical failure. Regular fluid changes with a high-performance synthetic fluid can restore shift quality and protect the internal valves and clutches. Finally, the cooling system in these vehicles is a high-pressure aluminum design that requires a corrosion-resistant coolant to prevent liner cavitation and radiator degradation. Using a high-performance antifreeze ensures that the cooling system continues to operate efficiently, preventing overheating and costly head gasket failures.
Closing Thoughts on Fluid Maintenance
Choosing the right lubricants is one of the most effective ways to protect the investment in a 2007 Jaguar S-Type. Whether you are dealing with an engine that has accumulated high mileage or a transmission that needs refreshment, the synthetic fluids discussed here offer superior protection compared to conventional alternatives. By adhering to the recommended capacities and using products like AMSOIL Signature Series, owners can ensure their vehicle maintains its characteristic smoothness and reliability. These lubricants are designed to handle the specific demands of the AJ27 engine and its associated systems, providing peace of mind for the driver.
For those looking to simplify their maintenance routine, building an oil change kit that includes the appropriate oil, filter, and necessary fluid additives can take the guesswork out of the process. This ensures that every component of the powertrain receives the correct lubrication at the right time. With the right fluids, the 2007 Jaguar S-Type remains a rewarding vehicle to drive, capable of delivering the luxury and performance that made it a favorite among enthusiasts.
“`