Engine Cooling System Specifications (2.0L Diesel)

2008 Chevrolet Optra5 LT, StandardSECTION Engine Cooling System Specifications (2.0L Diesel)
Application Specification
Unit Standard
Cooling System
Cooling Type - Forced Water Pressurized
Coolant
  • Type
- DEX-COOL/Silicated Based Coolant
  • Capacity
L (qt) 8 (8.5)
Thermostat
  • Type
- Wax Pallet
  • Temperature (Opened Initially)
°C (°F) 78-82°C (172-180°F)
  • Temperature (Completely Open)
°C (°F) 95°C (203°F)
  • Temperature (Completely Closed)
°C (°F) 75°C (167°F)
Cooling Fan
  • Fan
- Axial Flow Type
  • Number of Blades
EA 7
  • Diameter
mm (in) 408 mm (16.06 in)
  • ON Temperature at Low Speed
°C (°F) 94°C (201°F)
  • OFF Temperature at Low Speed
°C (°F) 91°C (195°F)
  • ON Temperature at High Speed
°C (°F) 98°C (208°F)
  • OFF Temperature at High Speed
°C (°F) 95°C (203°F)
Surge Tank
  • Open Pressure of the Pressure Valve
kPa/psi 140 (20)
  • Open Pressure of the Vacuum Valve
kPa/psi 10 (1.5)
Water Pump
  • Type
- Centrifugal
  • Impeller Diameter
mm (in) 85 mm (3.35 in)
  • Number of Impeller Blades
EA 7
Radiator
  • Type
mm (in) Cross Flow
  • Core Width
mm (in) 565 mm (22.24 in)
  • Core Height
mm (in) 414 mm (16.3 in)
  • Core Depth
mm (in) 27 mm (1.063 in)
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.