Brand Heritage:
Jaguar's reputation for luxury, performance, and distinctive styling.
Model Context:
The XJ40 represented Jaguar's evolution in luxury saloon design, blending traditional elegance with modern engineering.
Competitors:
BMW 7 Series, Mercedes-Benz S-Class, Audi V8/A8, Rolls-Royce Silver Spirit/Spirit II.
Design Philosophy:
Focus on driver comfort, refined performance, and sophisticated aesthetics.
Maintenance Focus:
This sheet emphasizes essential maintenance tasks to ensure the longevity and optimal performance of the 6.0L XJ40.
Engine Maintenance:
Oil change, filter replacement, spark plug checks, coolant checks, air filter inspection.
Transmission Maintenance:
Automatic transmission fluid level and condition check.
Brake System Maintenance:
Brake fluid level check, pad wear inspection, rotor inspection.
Suspension Steering Maintenance:
Visual inspection of suspension components and steering linkage.
Cooling System Maintenance:
Coolant level, condition, and hose inspection.
Electrical System Maintenance:
Battery terminal inspection, general electrical system check.
Exhaust System Maintenance:
Visual inspection for leaks and damage.
Preventative Maintenance:
Scheduled service tasks based on mileage or time intervals.
Inspection Points:
Key areas for visual and functional checks during service.
Fluid Checks:
Specifications for checking and topping up essential fluids.
Lubrication Points:
Identification of lubrication points as per Jaguar recommendations.
Depth Level:
Routine Service / Scheduled Maintenance
Diagnostic Scope:
Focuses on scheduled tasks, not advanced diagnostics or repair procedures.
File Format:
Paper (Original or High-Quality Reproduction)
Print Quality:
Professional, clear text and graphics.
Binding Type:
N/A (Single or multi-page sheet)
Paper Type:
Durable, possibly laminated or cardstock for workshop use.
Engine Code:
AJ6 (4.0L) and AJ16 (later 4.0L/3.2L) derivatives, but this sheet specifically references the 6.0L variant, which typically utilizes a variant of the AJ16 or a direct derivative for the 6.0L capacity.
Engine Type:
Naturally Aspirated V12
Displacement:
5993 cc (6.0 Litres)
Horsepower Approx:
~310-318 bhp (depending on specific tune)
Torque Approx:
~350-360 lb-ft (depending on specific tune)
Fuel Delivery:
Multi-point Fuel Injection (MPI)
Ignition System:
Electronic Ignition System
Recommended Oil Type:
API SG or SH, SAE 10W-40 or 10W-50 (check specific manual for exact viscosity and specifications)
Oil Capacity:
Approx. 8.5 Litres (with filter)
Spark Plug Type:
NGK PFR6B or equivalent (check specific VIN for exact part number)
Coolant Type:
Ethylene Glycol based, long-life coolant (e.g., Jaguar specification JLM 20972 or equivalent OAT coolant)
Air Filter Part Number Example:
Lucas F2714 / Fram CA5349 / Jaguar part number C2C12362 (verify for specific model year/VIN)
Transmission Type:
ZF 4HP22 (or later derivative)
Optional Transmission:
N/A for 6.0L models of this era, typically automatic only.
Transmission Control:
Electronic control with modes (e.g., Sport/Normal)
Transmission Fluid Type:
Dexron III (or equivalent JLM 20604)
Transmission Fluid Capacity:
Approx. 4.5 Litres for torque converter drain/fill, higher for full system flush.
Crash Test Ratings:
No standardized modern crash test ratings available from official bodies of that era. Relied on internal testing and design standards of the time.
ABS:
Standard Anti-lock Braking System (ABS).
Traction Control:
Traction control system (ASR - Automatic Slip Regulation) often available or standard on higher trims.
Airbags:
Driver's airbag standard, passenger airbag optional or standard depending on late model year production.
Seatbelts:
All-round seatbelts, front pre-tensioners.
Audio System:
Premium sound systems often featuring Clarion or Jaguar branded units with cassette and radio, optional CD changer.
Climate Control:
Automatic climate control with air conditioning.
Cruise Control:
Standard electronic cruise control.
Onboard Computer:
Trip computer providing basic vehicle status and fuel consumption data.
Connectivity Features:
Limited by era; no integrated Bluetooth or USB. External phone kits were aftermarket additions.
Minor Service:
Typically every 6,000-10,000 miles or 6-12 months, whichever comes first.
Major Service:
Every 24,000-30,000 miles or 24 months, involving more extensive checks and component replacements.
Timing Belt Replacement:
N/A for V12 engines (chain-driven). Check timing chain tensioner and guides.
Brake Fluid Type:
DOT 4 (or specified Jaguar equivalent JLM 20798)
Power Steering Fluid:
Texaco Cold Climate Power Steering Fluid (or equivalent JLM 20602)
Coolant Capacity:
Approx. 13.5 Litres
Head Gasket Leaks:
Common on earlier AJ6 engines, less so on later AJ16/V12 but still possible due to age.
Electrical Gremlins:
Lucas electrical components and complex wiring loom can be prone to issues due to age and corrosion.
Rust Corrosion:
Wheel arches, sills, rear chassis outriggers are susceptible to rust.
Air Suspension Problems:
Self-levelling suspension (often Nivomat or similar) can fail, leading to saggy rear ride height.
Cooling System Overheating:
Radiator blockages, faulty thermostat, or failing water pump can cause overheating.
Brand Philosophy:
Jaguar Cars has a long history of producing luxurious, high-performance grand tourers and sports saloons.
Xj Series Lineage:
The XJ40 succeeded the XJ-S coupé platform and was Jaguar's primary luxury saloon offering throughout the late 1980s and early 1990s.
Xj40 Development:
A complete redesign from previous XJ models, featuring a more modern monocoque chassis and updated styling.
Production Years:
1986-1994
Manufacturing Location:
Coventry, England
Key Milestones:
Introduction of the 6.0L V12 engine in 1993 marked the peak of performance for the XJ40 line.
Design Awards:
While specific awards for the XJ40 are not widely publicized, its design was influential and appreciated for its classic Jaguar lines.
Reliability Perceptions:
Perceived as a luxurious and capable cruiser, but reliability was sometimes questioned compared to German rivals, particularly concerning early electrical components.
Quality Standards:
Manufactured to Jaguar's stringent quality standards of the period.