API SG, SAE 10W-30 (refer to manual for exact specifications)
Oil Capacity:
Approx. 4.5 Liters (4.8 US Quarts) with filter (refer to manual for exact specifications)
Transmission
Standard
Transmission Type:
6-speed manual transmission (Getrag 6-speed)
Optional
Transmission Type:
4-speed automatic transmission
Features
Drivetrain:
All-Wheel Drive (AWD) with Active Four-Wheel Steering (4WS) and Active Aerodynamics
Fluid Specifications
Manual Transmission Fluid:
API GL-4 or GL-5, SAE 75W-90 (refer to manual for exact specifications)
Automatic Transmission Fluid:
Diamond SP-III (refer to manual for exact specifications)
Dimensions
Exterior
Length:
4,650 mm (183.1 in)
Width:
1,755 mm (69.1 in)
Height:
1,250 mm (49.2 in)
Wheelbase:
2,500 mm (98.4 in)
Front Track:
1,505 mm (59.3 in)
Rear Track:
1,500 mm (59.1 in)
Weights
Curb Weight:
Approx. 1,500 kg (3,307 lbs) - varies with transmission and options
Gross Vehicle Weight Rating:
N/A (refer to manual)
Safety Features
Ratings
NHTSA Ratings:
N/A (Safety testing standards varied significantly in 1991; manual will detail specific safety features)
Active Features
Active Aero:
Active Aerodynamics (adjustable front air dam, rear wing)
4Ws:
Active Four-Wheel Steering (4WS)
Passive Features
Airbags:
Driver-side airbag (standard)
Seatbelts:
Three-point inertia-reel seatbelts
Braking System:
Four-wheel Anti-lock Braking System (ABS)
Technology Features
Infotainment
Audio System:
Factory premium audio system (details vary by trim, manual covers diagnostics and repair)
Driver Assistance
ABS:
Standard Anti-lock Braking System (ABS)
Aero Tech:
Active Aerodynamics for enhanced stability at speed.
Connectivity
ECU Diagnostics:
On-board diagnostics, trouble codes, and diagnostic procedures are thoroughly covered.
Maintenance
Service Intervals
Oil Change Interval:
Every 3,750 miles or 3 months (refer to manual for specific conditions)
Timing Belt Replacement Interval:
Every 60,000 miles or 5 years (critical item, refer to manual for procedures)
Transmission Fluid Interval:
Every 30,000 miles or 24 months (refer to manual for specific conditions)
Fluid Specifications
Coolant Type:
Mitsubishi Super Long Life Coolant (or equivalent ethylene glycol-based coolant, refer to manual)
Brake Fluid Type:
DOT 3 or DOT 4 (refer to manual for exact specification)
Power Steering Fluid Type:
Mitsubishi Power Steering Fluid or Dexron II (refer to manual)
Known Issues
Common Failures:
Timing belt tensioner failure (can cause catastrophic engine damage), turbocharger issues, clutch wear, active aero system glitches, ECS (Electronic Control Suspension) issues on later models (less common on 1991 but covered in the manual).
Maintenance Criticality:
Strict adherence to the timing belt replacement schedule is paramount due to the interference engine design.
Vehicle History
Brand Heritage
Brand Focus:
Mitsubishi is known for its engineering prowess, particularly in turbocharged engines and advanced drivetrain technologies.
Model Evolution
Introduction:
The GTO (or 3000GT in most export markets) was Mitsubishi's flagship sports car, designed to compete with European exotics.
Generation 1 Start:
First generation debuted in 1990 (for the 1991 model year).
Production
Manufacturing Location:
Japan
Awards & Recognition
Recognitions
Automotive Journalism:
Car and Driver's '10Best' list in 1991.
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