Just some official info on the VE Cooling system:
"The improvements in the VE include:
Cooling System
• Holden has switched from the traditional Commodore cross-flow radiator to down flow. The top and bottom radiator tanks now match the full width of the radiator and are no longer restricted to radiator height as previously. The transmission cooler in the bottom tank grows from the VZ's 290mm to 450mm for a huge lift in cooling capacity.
• A new power steering cooler is installed in the bottom row of the air-conditioning condenser for a similar boost in cooling capacity and a 20 per cent reduction in fluid temperatures during power-steering abuse testing.
• The V6 models have a 24mm radiator core while the V8 is boosted to 40mm.
• Twin puller fans with new blade designs provide 70 per cent coverage of the radiator core compared to 55 per cent for the VZ. These new fans exploit new airflow distribution based on computational fluid dynamics that optimize a path into the engine bay then under.
• Radiator cooling fans for the V6 models now have three speeds. Although the V8 continues with two speeds, the fan design is all new.
• A new radiator cap design with two O-ring seals separates the sealing function from the pressure relief valve so that sealing is not disturbed when the pressure relief valve opens and shuts.
• The new Condenser Radiator Fan Module (radiator, condenser and fans) is supplied by Behr, South Africa, a manufacturer which also supplies BMW.
• Coolant is a new premium long life specification. A large and easily accessed radiator drain plug allows fast draining and capture of the coolant without contamination during repairs for re-use and environmental safety.
• The standard cooling system does not require any upgrades for the 2100kg tow pack, highlighting the big margin for everyday usage."